What does the WHERE clause do?
Anonymous Quiz
6%
A) Sorts data
88%
B) Filters data based on conditions
5%
C) Limits number of rows
0%
D) Removes duplicates
❤2
4. Which command removes duplicate values from a query result?
Anonymous Quiz
25%
A) UNIQUE
63%
B) DISTINCT
9%
C) FILTER
3%
D) GROUP BY
❤3
5. What does the LIMIT command do?
Anonymous Quiz
6%
A) Sorts data ascending
10%
B) Filters data by condition
83%
C) Restricts number of rows returned
1%
D) Combines two tables
❤3
Whether you're a beginner or prepping for a system design or data role — mastering these SQL essentials will take you far 💡
⬇️ Here's a quick reference of key SQL operations to know:
➜ SELECT → Retrieve data from a table
➜ WHERE → Filter rows based on condition
➜ GROUP BY → Aggregate rows with same values
➜ HAVING → Filter groups after aggregation
➜ ORDER BY → Sort result by one or more columns
➜ JOIN → Combine rows from multiple tables
➜ UNION → Merge result sets into one
➜ INSERT INTO → Add new data into a table
➜ UPDATE → Modify existing records
➜ DELETE → Remove records
➜ CREATE TABLE → Define a new table
➜ ALTER TABLE → Modify an existing table
➜ DROP TABLE → Delete a table
➜ TRUNCATE TABLE → Remove all records
➜ DISTINCT → Get unique values
➜ LIMIT → Restrict number of results
➜ IN / BETWEEN → Filter by multiple values/ranges
➜ LIKE → Pattern matching
➜ IS NULL → Filter NULL values
➜ COUNT() / SUM() / AVG() → Common aggregate functions
Hope this helps you 😊
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❤7👍5
How to Become a Data Analyst from Scratch! 🚀
Whether you're starting fresh or upskilling, here's your roadmap:
➜ Master Excel and SQL - solve SQL problems from leetcode & hackerank
➜ Get the hang of either Power BI or Tableau - do some hands-on projects
➜ learn what the heck ATS is and how to get around it
➜ learn to be ready for any interview question
➜ Build projects for a data portfolio
➜ And you don't need to do it all at once!
➜ Fail and learn to pick yourself up whenever required
Whether it's acing interviews or building an impressive portfolio, give yourself the space to learn, fail, and grow. Good things take time ✅
Like if it helps ❤️
I have curated best 80+ top-notch Data Analytics Resources 👇👇
https://topmate.io/analyst/861634
Hope it helps :)
Whether you're starting fresh or upskilling, here's your roadmap:
➜ Master Excel and SQL - solve SQL problems from leetcode & hackerank
➜ Get the hang of either Power BI or Tableau - do some hands-on projects
➜ learn what the heck ATS is and how to get around it
➜ learn to be ready for any interview question
➜ Build projects for a data portfolio
➜ And you don't need to do it all at once!
➜ Fail and learn to pick yourself up whenever required
Whether it's acing interviews or building an impressive portfolio, give yourself the space to learn, fail, and grow. Good things take time ✅
Like if it helps ❤️
I have curated best 80+ top-notch Data Analytics Resources 👇👇
https://topmate.io/analyst/861634
Hope it helps :)
❤8
80% of people who start learning data analytics never land a job.
Not because they lack skill
but because they get stuck in "preparation mode."
I was almost one of them.
I spent months:
-Taking courses.
-Watching YouTube tutorials.
-Practicing SQL and Power BI.
But when it came time to publish a project or apply for jobs
I hesitated.
“I need to learn more first.”
“My portfolio isn’t ready.”
“Maybe next month.”
Sound familiar?
You don’t need more knowledge
you need more execution.
Data analysts who build & share projects are 3X more likely to get hired.
The best analysts aren’t the smartest.
They’re the ones who take action.
-They publish dashboards, even if they aren’t perfect.
-They post case studies, even when they feel like imposters.
-They apply for jobs before they "feel ready"
Stop overthinking.
Pick a dataset, build something, and share it today.
One messy project is worth more than 100 courses you never use.
Not because they lack skill
but because they get stuck in "preparation mode."
I was almost one of them.
I spent months:
-Taking courses.
-Watching YouTube tutorials.
-Practicing SQL and Power BI.
But when it came time to publish a project or apply for jobs
I hesitated.
“I need to learn more first.”
“My portfolio isn’t ready.”
“Maybe next month.”
Sound familiar?
You don’t need more knowledge
you need more execution.
Data analysts who build & share projects are 3X more likely to get hired.
The best analysts aren’t the smartest.
They’re the ones who take action.
-They publish dashboards, even if they aren’t perfect.
-They post case studies, even when they feel like imposters.
-They apply for jobs before they "feel ready"
Stop overthinking.
Pick a dataset, build something, and share it today.
One messy project is worth more than 100 courses you never use.
1❤25🔥8👍6👏5
What does the % symbol do in a SQL LIKE query?
Anonymous Quiz
22%
(A) Matches a single character
17%
(B) Matches exact value
56%
(C) Matches any sequence of characters
4%
(D) Filters NULL values
❤2
Which SQL keyword is used to check if a value is in a list of values?
Anonymous Quiz
15%
(A) BETWEEN
14%
(B) MATCH
59%
(C) IN
12%
(D) LIKE
❤2
What does the ORDER BY salary DESC clause do?
Anonymous Quiz
7%
(A) Sorts salary in ascending order
2%
(B) Sorts salary randomly
87%
(C) Sorts salary in descending order
3%
(D) Filters salaries less than zero
❤2
4️⃣ Which condition returns rows where manager_id is empty?
Anonymous Quiz
9%
(A) manager_id = 0
78%
(B) manager_id IS NULL
6%
(C) manager_id NOT NULL
7%
(D) manager_id = ''
❤3
5️⃣ Which SQL query filters employees in the 'HR' or 'IT' department?
Anonymous Quiz
18%
(A) WHERE department = 'HR' AND 'IT'
39%
(B) WHERE department IN ('HR', 'IT')
37%
(C) WHERE department = 'HR' OR 'IT'
7%
(D) WHERE department BETWEEN 'HR' AND 'IT'
❤6👍1
📊 Data Analytics: A-Z! 🚀
Data Analytics is the art and science of examining raw data to draw conclusions about that information. It's a powerful field that helps businesses and organizations make informed decisions, improve efficiency, and gain a competitive edge.
Here's a journey through Data Analytics, from the basics to advanced topics:
A - Applications:
• Across industries: Finance, Healthcare, Marketing, Retail, Supply Chain, etc.
• Use cases: Customer segmentation, fraud detection, risk management, predictive maintenance, market research, and more.
B - Business Intelligence (BI):
• Tools and technologies for analyzing business data and presenting it in an easily understandable format (dashboards, reports).
• Examples: Power BI, Tableau, Qlik Sense.
C - Cleaning Data:
• The process of identifying and correcting errors, inconsistencies, and inaccuracies in a dataset.
• Techniques: Handling missing values, removing duplicates, correcting typos, standardizing formats.
D - Data Visualization:
• Graphical representation of data using charts, graphs, maps, and other visual elements.
• Goal: Communicate insights effectively and make data easier to understand.
E - ETL (Extract, Transform, Load):
• The process of extracting data from various sources, transforming it into a consistent format, and loading it into a data warehouse or other storage system.
F - Formulas (Excel):
• Essential for performing calculations and data manipulation in Excel.
• Examples: SUM, AVERAGE, IF, VLOOKUP, COUNTIF.
G - Google Analytics:
• A web analytics service that tracks and reports website traffic.
• Used to analyze user behavior, measure the effectiveness of marketing campaigns, and improve website performance.
H - Hypothesis Testing:
• A statistical method used to determine whether there is enough evidence to support a hypothesis about a population.
• Common tests: T-tests, Chi-square tests, ANOVA.
I - Insights:
• Actionable conclusions and discoveries derived from data analysis.
• Insights should be clear, concise, and relevant to the business context.
J - JOINs (SQL):
• A SQL clause used to combine rows from two or more tables based on a related column.
• Types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN.
K - Key Performance Indicators (KPIs):
• Measurable values that demonstrate how effectively a company is achieving key business objectives.
• Examples: Revenue growth, customer satisfaction, market share.
L - Libraries (Python):
• Essential Python libraries for data analysis:
• Pandas: Data manipulation and analysis.
• NumPy: Numerical computing.
• Matplotlib & Seaborn: Data visualization.
• Scikit-learn: Machine learning.
M - Machine Learning (ML):
• A type of artificial intelligence that enables computers to learn from data without being explicitly programmed.
• Used for tasks like prediction, classification, and clustering.
N - Normalization:
• A data preprocessing technique used to scale numerical data to a common range, improving the performance of machine learning algorithms.
O - Outliers:
• Data points that are significantly different from other values in a dataset.
• Can be caused by errors, anomalies, or natural variations.
P - Pivot Tables (Excel):
• A powerful tool in Excel for summarizing and analyzing large datasets.
• Allows you to quickly group, filter, and aggregate data.
Q - Queries (SQL):
• Requests for data from a database.
• Used to retrieve, insert, update, and delete data.
R - Regression Analysis:
• A statistical method used to model the relationship between a dependent variable and one or more independent variables.
• Types: Linear regression, logistic regression.
S - SQL (Structured Query Language):
• The standard language for interacting with relational databases.
• Used to retrieve, manipulate, and manage data.
T - Tableau:
• A popular data visualization and business intelligence tool.
• Known for its user-friendly interface and powerful analytical capabilities.
Data Analytics is the art and science of examining raw data to draw conclusions about that information. It's a powerful field that helps businesses and organizations make informed decisions, improve efficiency, and gain a competitive edge.
Here's a journey through Data Analytics, from the basics to advanced topics:
A - Applications:
• Across industries: Finance, Healthcare, Marketing, Retail, Supply Chain, etc.
• Use cases: Customer segmentation, fraud detection, risk management, predictive maintenance, market research, and more.
B - Business Intelligence (BI):
• Tools and technologies for analyzing business data and presenting it in an easily understandable format (dashboards, reports).
• Examples: Power BI, Tableau, Qlik Sense.
C - Cleaning Data:
• The process of identifying and correcting errors, inconsistencies, and inaccuracies in a dataset.
• Techniques: Handling missing values, removing duplicates, correcting typos, standardizing formats.
D - Data Visualization:
• Graphical representation of data using charts, graphs, maps, and other visual elements.
• Goal: Communicate insights effectively and make data easier to understand.
E - ETL (Extract, Transform, Load):
• The process of extracting data from various sources, transforming it into a consistent format, and loading it into a data warehouse or other storage system.
F - Formulas (Excel):
• Essential for performing calculations and data manipulation in Excel.
• Examples: SUM, AVERAGE, IF, VLOOKUP, COUNTIF.
G - Google Analytics:
• A web analytics service that tracks and reports website traffic.
• Used to analyze user behavior, measure the effectiveness of marketing campaigns, and improve website performance.
H - Hypothesis Testing:
• A statistical method used to determine whether there is enough evidence to support a hypothesis about a population.
• Common tests: T-tests, Chi-square tests, ANOVA.
I - Insights:
• Actionable conclusions and discoveries derived from data analysis.
• Insights should be clear, concise, and relevant to the business context.
J - JOINs (SQL):
• A SQL clause used to combine rows from two or more tables based on a related column.
• Types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN.
K - Key Performance Indicators (KPIs):
• Measurable values that demonstrate how effectively a company is achieving key business objectives.
• Examples: Revenue growth, customer satisfaction, market share.
L - Libraries (Python):
• Essential Python libraries for data analysis:
• Pandas: Data manipulation and analysis.
• NumPy: Numerical computing.
• Matplotlib & Seaborn: Data visualization.
• Scikit-learn: Machine learning.
M - Machine Learning (ML):
• A type of artificial intelligence that enables computers to learn from data without being explicitly programmed.
• Used for tasks like prediction, classification, and clustering.
N - Normalization:
• A data preprocessing technique used to scale numerical data to a common range, improving the performance of machine learning algorithms.
O - Outliers:
• Data points that are significantly different from other values in a dataset.
• Can be caused by errors, anomalies, or natural variations.
P - Pivot Tables (Excel):
• A powerful tool in Excel for summarizing and analyzing large datasets.
• Allows you to quickly group, filter, and aggregate data.
Q - Queries (SQL):
• Requests for data from a database.
• Used to retrieve, insert, update, and delete data.
R - Regression Analysis:
• A statistical method used to model the relationship between a dependent variable and one or more independent variables.
• Types: Linear regression, logistic regression.
S - SQL (Structured Query Language):
• The standard language for interacting with relational databases.
• Used to retrieve, manipulate, and manage data.
T - Tableau:
• A popular data visualization and business intelligence tool.
• Known for its user-friendly interface and powerful analytical capabilities.
❤7👍1
U - Unstructured Data:
• Data that does not have a predefined format (e.g., text documents, images, videos, social media posts).
• Requires specialized tools and techniques for analysis.
V - Visualizations:
• Charts, graphs, maps, and other visual elements used to represent data.
• Choose the right visualization to effectively communicate your insights.
W - WHERE Clause (SQL):
• A SQL clause used to filter rows based on specified conditions.
• Essential for retrieving specific data from a table.
X - Exploratory Data Analysis (EDA):
• An approach to analyzing data to summarize its main characteristics, often with visual methods.
• Goal: To gain a better understanding of the data before performing more formal analysis.
Y - Y-axis (Charts):
• The vertical axis in a chart, typically used to represent the dependent variable or the value being measured.
Z - Zero-Based Thinking:
• An approach to data analysis that encourages you to question existing assumptions and look at the data with fresh eyes.
React ❤️ if you found this helpful!
• Data that does not have a predefined format (e.g., text documents, images, videos, social media posts).
• Requires specialized tools and techniques for analysis.
V - Visualizations:
• Charts, graphs, maps, and other visual elements used to represent data.
• Choose the right visualization to effectively communicate your insights.
W - WHERE Clause (SQL):
• A SQL clause used to filter rows based on specified conditions.
• Essential for retrieving specific data from a table.
X - Exploratory Data Analysis (EDA):
• An approach to analyzing data to summarize its main characteristics, often with visual methods.
• Goal: To gain a better understanding of the data before performing more formal analysis.
Y - Y-axis (Charts):
• The vertical axis in a chart, typically used to represent the dependent variable or the value being measured.
Z - Zero-Based Thinking:
• An approach to data analysis that encourages you to question existing assumptions and look at the data with fresh eyes.
React ❤️ if you found this helpful!
❤15👍1
100 Days Data Analysis Roadmap for 2025
Daily hours: 1-2 hours. the practical application of what you learn is crucial, so allocate some time for hands-on projects and real- world applications.
Days 1-10: Foundations of Data Analysis
Days 1-2:Install Python, Jupyter Notebooks, and necessary libraries (NumPy, Pandas).
Days 3-5: Learn the basics of Python programming.
Days 6-10: Dive into data manipulation with Pandas.
Days 11-20: SQL for Data Analysis
Days 11-15: Learn SQL for querying and analyzing databases.
Days 16-20: Practice SQL on real-world datasets.
Days 21-30: Excel for Data Analysis
Days 21-25: Master essential Excel functions for data analysis.
Days 26-30: Explore advanced Excel features for data manipulation and visualization.
Days 31-40: Data Cleaning and Preprocessing
Days 31-35: Explore data cleaning techniques and handle missing data.
Days 36-40: Learn about data preprocessing techniques (scaling, encoding, etc.).
Days 41-50: Exploratory Data Analysis (EDA)
Days 41-45: Understand statistical concepts and techniques for EDA.
Days 46-50: Apply data visualization tools (Matplotlib, Seaborn) for EDA.
Days 51-60: Statistical Analysis
Days 51-55: Deepen your understanding of statistical concepts.
Days 56-60: Learn hypothesis testing and regression analysis.
Days 61-70: Advanced Data Visualization
Days 61-65: Explore advanced data visualization with tools like Plotly and Tableau.
Days 66-70: Create interactive dashboards for data storytelling.
Days 71-80: Time Series Analysis and Forecasting
Days 71-75: Understand time series data and basic analysis.
Days 76-80: Implement time series forecasting models.
Days 81-90: Capstone Project and Specialization
Work on a practical data analysis project incorporating all learned concepts.
Choose a specialization (e.g., domain-specific analysis) and explore advanced techniques.
Days 91-100: Additional Tools
Days 91-95: Introduction to big data concepts (Hadoop, Spark).
• Days 96-100: Hands-on experience with distributed computing using Spark.
Data Analytics Resources 👇👇
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02
Hope this helps you 😊
Daily hours: 1-2 hours. the practical application of what you learn is crucial, so allocate some time for hands-on projects and real- world applications.
Days 1-10: Foundations of Data Analysis
Days 1-2:Install Python, Jupyter Notebooks, and necessary libraries (NumPy, Pandas).
Days 3-5: Learn the basics of Python programming.
Days 6-10: Dive into data manipulation with Pandas.
Days 11-20: SQL for Data Analysis
Days 11-15: Learn SQL for querying and analyzing databases.
Days 16-20: Practice SQL on real-world datasets.
Days 21-30: Excel for Data Analysis
Days 21-25: Master essential Excel functions for data analysis.
Days 26-30: Explore advanced Excel features for data manipulation and visualization.
Days 31-40: Data Cleaning and Preprocessing
Days 31-35: Explore data cleaning techniques and handle missing data.
Days 36-40: Learn about data preprocessing techniques (scaling, encoding, etc.).
Days 41-50: Exploratory Data Analysis (EDA)
Days 41-45: Understand statistical concepts and techniques for EDA.
Days 46-50: Apply data visualization tools (Matplotlib, Seaborn) for EDA.
Days 51-60: Statistical Analysis
Days 51-55: Deepen your understanding of statistical concepts.
Days 56-60: Learn hypothesis testing and regression analysis.
Days 61-70: Advanced Data Visualization
Days 61-65: Explore advanced data visualization with tools like Plotly and Tableau.
Days 66-70: Create interactive dashboards for data storytelling.
Days 71-80: Time Series Analysis and Forecasting
Days 71-75: Understand time series data and basic analysis.
Days 76-80: Implement time series forecasting models.
Days 81-90: Capstone Project and Specialization
Work on a practical data analysis project incorporating all learned concepts.
Choose a specialization (e.g., domain-specific analysis) and explore advanced techniques.
Days 91-100: Additional Tools
Days 91-95: Introduction to big data concepts (Hadoop, Spark).
• Days 96-100: Hands-on experience with distributed computing using Spark.
Data Analytics Resources 👇👇
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02
Hope this helps you 😊
❤10
Power BI Interview Questions with Answers
1. What is the role of the M language in Power BI?
- The M language is used in Power Query to perform data transformation and manipulation tasks. It allows users to create complex data transformation steps, customize data import processes, and automate repetitive tasks in the data preparation stage.
2. How do you create a gauge chart in Power BI?
- To create a gauge chart, go to the Report View, select the data fields you want to visualize (typically a single value), and then choose the "Gauge" option from the visualizations pane. A gauge chart is used to show progress towards a target value.
3. What is the difference between a heat map and a filled map in Power BI?
- A heat map uses color gradients to represent the density or intensity of data points within a specific area, while a filled map colors geographic areas (such as countries or states) based on the value of a specific measure. Heat maps are typically used to show data distribution patterns, whereas filled maps are used to compare data across different regions.
4. Explain the concept of data masking in Power BI and its use cases.
- Data masking in Power BI involves obscuring sensitive data to protect privacy and ensure compliance with data protection regulations. This can be done using techniques such as anonymization, pseudonymization, or data obfuscation. Data masking is useful in scenarios where data needs to be shared with stakeholders without exposing sensitive information.
5. What is the function of the "Append Queries" feature in Power BI, and how is it used?
- The "Append Queries" feature in Power BI allows users to combine data from two or more tables by appending rows from one table to another. It is used in the Power Query Editor to consolidate data from multiple sources or tables into a single table for analysis and reporting.
1. What is the role of the M language in Power BI?
- The M language is used in Power Query to perform data transformation and manipulation tasks. It allows users to create complex data transformation steps, customize data import processes, and automate repetitive tasks in the data preparation stage.
2. How do you create a gauge chart in Power BI?
- To create a gauge chart, go to the Report View, select the data fields you want to visualize (typically a single value), and then choose the "Gauge" option from the visualizations pane. A gauge chart is used to show progress towards a target value.
3. What is the difference between a heat map and a filled map in Power BI?
- A heat map uses color gradients to represent the density or intensity of data points within a specific area, while a filled map colors geographic areas (such as countries or states) based on the value of a specific measure. Heat maps are typically used to show data distribution patterns, whereas filled maps are used to compare data across different regions.
4. Explain the concept of data masking in Power BI and its use cases.
- Data masking in Power BI involves obscuring sensitive data to protect privacy and ensure compliance with data protection regulations. This can be done using techniques such as anonymization, pseudonymization, or data obfuscation. Data masking is useful in scenarios where data needs to be shared with stakeholders without exposing sensitive information.
5. What is the function of the "Append Queries" feature in Power BI, and how is it used?
- The "Append Queries" feature in Power BI allows users to combine data from two or more tables by appending rows from one table to another. It is used in the Power Query Editor to consolidate data from multiple sources or tables into a single table for analysis and reporting.
❤7👍4
Roadmap for Becoming a Data Analyst 📈 📖
1. Prerequisites
- Learn basic Excel/Google Sheets for data handling
- Learn Python or R for data manipulation
- Study Mathematics & Statistics:
1️⃣ Mean, median, mode, standard deviation
2️⃣ Probability, hypothesis testing, distributions
2. Learn Essential Tools & Libraries
- Python libraries: Pandas, NumPy, Matplotlib, Seaborn
- SQL: For querying databases
- Excel: Pivot tables, VLOOKUP, charts
- Power BI / Tableau: For data visualization
3. Data Handling & Preprocessing
- Understand data types, missing values
- Data cleaning techniques
- Data transformation & feature engineering
4. Exploratory Data Analysis (EDA)
- Identify patterns, trends, and outliers
- Use visualizations (bar charts, histograms, heatmaps)
- Summarize findings effectively
5. Basic Analytics & Business Insights
- Understand KPIs, metrics, dashboards
- Build analytical reports
- Translate data into actionable business insights
6. Real Projects & Practice
- Analyze sales, customer, or marketing data
- Perform churn analysis or product performance reviews
- Use platforms like Kaggle or Google Dataset Search
7. Communication & Storytelling
- Present insights with compelling visuals
- Create clear, concise reports for stakeholders
8. Advanced Skills (Optional)
- Learn Predictive Modeling (basic ML)
- Understand A/B Testing, time-series analysis
- Explore Big Data Tools: Spark, Hadoop (if needed)
9. Career Prep
- Build a strong portfolio on GitHub
- Create a LinkedIn profile with projects
- Prepare for SQL, Excel, and scenario-based interviews
💡 Consistent practice + curiosity = great data analyst!
💬 Double Tap ♥️ for more
1. Prerequisites
- Learn basic Excel/Google Sheets for data handling
- Learn Python or R for data manipulation
- Study Mathematics & Statistics:
1️⃣ Mean, median, mode, standard deviation
2️⃣ Probability, hypothesis testing, distributions
2. Learn Essential Tools & Libraries
- Python libraries: Pandas, NumPy, Matplotlib, Seaborn
- SQL: For querying databases
- Excel: Pivot tables, VLOOKUP, charts
- Power BI / Tableau: For data visualization
3. Data Handling & Preprocessing
- Understand data types, missing values
- Data cleaning techniques
- Data transformation & feature engineering
4. Exploratory Data Analysis (EDA)
- Identify patterns, trends, and outliers
- Use visualizations (bar charts, histograms, heatmaps)
- Summarize findings effectively
5. Basic Analytics & Business Insights
- Understand KPIs, metrics, dashboards
- Build analytical reports
- Translate data into actionable business insights
6. Real Projects & Practice
- Analyze sales, customer, or marketing data
- Perform churn analysis or product performance reviews
- Use platforms like Kaggle or Google Dataset Search
7. Communication & Storytelling
- Present insights with compelling visuals
- Create clear, concise reports for stakeholders
8. Advanced Skills (Optional)
- Learn Predictive Modeling (basic ML)
- Understand A/B Testing, time-series analysis
- Explore Big Data Tools: Spark, Hadoop (if needed)
9. Career Prep
- Build a strong portfolio on GitHub
- Create a LinkedIn profile with projects
- Prepare for SQL, Excel, and scenario-based interviews
💡 Consistent practice + curiosity = great data analyst!
💬 Double Tap ♥️ for more
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🚀 How to Land a Data Analyst Job Without Experience?
Many people asked me this question, so I thought to answer it here to help everyone. Here is the step-by-step approach i would recommend:
✅ Step 1: Master the Essential Skills
You need to build a strong foundation in:
🔹 SQL – Learn how to extract and manipulate data
🔹 Excel – Master formulas, Pivot Tables, and dashboards
🔹 Python – Focus on Pandas, NumPy, and Matplotlib for data analysis
🔹 Power BI/Tableau – Learn to create interactive dashboards
🔹 Statistics & Business Acumen – Understand data trends and insights
Where to learn?
📌 Google Data Analytics Course
📌 SQL – Mode Analytics (Free)
📌 Python – Kaggle or DataCamp
✅ Step 2: Work on Real-World Projects
Employers care more about what you can do rather than just your degree. Build 3-4 projects to showcase your skills.
🔹 Project Ideas:
✅ Analyze sales data to find profitable products
✅ Clean messy datasets using SQL or Python
✅ Build an interactive Power BI dashboard
✅ Predict customer churn using machine learning (optional)
Use Kaggle, Data.gov, or Google Dataset Search to find free datasets!
✅ Step 3: Build an Impressive Portfolio
Once you have projects, showcase them! Create:
📌 A GitHub repository to store your SQL/Python code
📌 A Tableau or Power BI Public Profile for dashboards
📌 A Medium or LinkedIn post explaining your projects
A strong portfolio = More job opportunities! 💡
✅ Step 4: Get Hands-On Experience
If you don’t have experience, create your own!
📌 Do freelance projects on Upwork/Fiverr
📌 Join an internship or volunteer for NGOs
📌 Participate in Kaggle competitions
📌 Contribute to open-source projects
Real-world practice > Theoretical knowledge!
✅ Step 5: Optimize Your Resume & LinkedIn Profile
Your resume should highlight:
✔️ Skills (SQL, Python, Power BI, etc.)
✔️ Projects (Brief denoscriptions with links)
✔️ Certifications (Google Data Analytics, Coursera, etc.)
Bonus Tip:
🔹 Write "Data Analyst in Training" on LinkedIn
🔹 Start posting insights from your learning journey
🔹 Engage with recruiters & join LinkedIn groups
✅ Step 6: Start Applying for Jobs
Don’t wait for the perfect job—start applying!
📌 Apply on LinkedIn, Indeed, and company websites
📌 Network with professionals in the industry
📌 Be ready for SQL & Excel assessments
Pro Tip: Even if you don’t meet 100% of the job requirements, apply anyway! Many companies are open to hiring self-taught analysts.
You don’t need a fancy degree to become a Data Analyst. Skills + Projects + Networking = Your job offer!
🔥 Your Challenge: Start your first project today and track your progress!
Share with credits: https://news.1rj.ru/str/sqlspecialist
Hope it helps :)
Many people asked me this question, so I thought to answer it here to help everyone. Here is the step-by-step approach i would recommend:
✅ Step 1: Master the Essential Skills
You need to build a strong foundation in:
🔹 SQL – Learn how to extract and manipulate data
🔹 Excel – Master formulas, Pivot Tables, and dashboards
🔹 Python – Focus on Pandas, NumPy, and Matplotlib for data analysis
🔹 Power BI/Tableau – Learn to create interactive dashboards
🔹 Statistics & Business Acumen – Understand data trends and insights
Where to learn?
📌 Google Data Analytics Course
📌 SQL – Mode Analytics (Free)
📌 Python – Kaggle or DataCamp
✅ Step 2: Work on Real-World Projects
Employers care more about what you can do rather than just your degree. Build 3-4 projects to showcase your skills.
🔹 Project Ideas:
✅ Analyze sales data to find profitable products
✅ Clean messy datasets using SQL or Python
✅ Build an interactive Power BI dashboard
✅ Predict customer churn using machine learning (optional)
Use Kaggle, Data.gov, or Google Dataset Search to find free datasets!
✅ Step 3: Build an Impressive Portfolio
Once you have projects, showcase them! Create:
📌 A GitHub repository to store your SQL/Python code
📌 A Tableau or Power BI Public Profile for dashboards
📌 A Medium or LinkedIn post explaining your projects
A strong portfolio = More job opportunities! 💡
✅ Step 4: Get Hands-On Experience
If you don’t have experience, create your own!
📌 Do freelance projects on Upwork/Fiverr
📌 Join an internship or volunteer for NGOs
📌 Participate in Kaggle competitions
📌 Contribute to open-source projects
Real-world practice > Theoretical knowledge!
✅ Step 5: Optimize Your Resume & LinkedIn Profile
Your resume should highlight:
✔️ Skills (SQL, Python, Power BI, etc.)
✔️ Projects (Brief denoscriptions with links)
✔️ Certifications (Google Data Analytics, Coursera, etc.)
Bonus Tip:
🔹 Write "Data Analyst in Training" on LinkedIn
🔹 Start posting insights from your learning journey
🔹 Engage with recruiters & join LinkedIn groups
✅ Step 6: Start Applying for Jobs
Don’t wait for the perfect job—start applying!
📌 Apply on LinkedIn, Indeed, and company websites
📌 Network with professionals in the industry
📌 Be ready for SQL & Excel assessments
Pro Tip: Even if you don’t meet 100% of the job requirements, apply anyway! Many companies are open to hiring self-taught analysts.
You don’t need a fancy degree to become a Data Analyst. Skills + Projects + Networking = Your job offer!
🔥 Your Challenge: Start your first project today and track your progress!
Share with credits: https://news.1rj.ru/str/sqlspecialist
Hope it helps :)
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Essential SQL Topics for Data Analysts 👇
- Basic Queries: SELECT, FROM, WHERE clauses.
- Sorting and Filtering: ORDER BY, GROUP BY, HAVING.
- Joins: INNER JOIN, LEFT JOIN, RIGHT JOIN.
- Aggregation Functions: COUNT, SUM, AVG, MIN, MAX.
- Subqueries: Embedding queries within queries.
- Data Modification: INSERT, UPDATE, DELETE.
- Indexes: Optimizing query performance.
- Normalization: Ensuring efficient database design.
- Views: Creating virtual tables for simplified queries.
- Understanding Database Relationships: One-to-One, One-to-Many, Many-to-Many.
Window functions are also important for data analysts. They allow for advanced data analysis and manipulation within specified subsets of data. Commonly used window functions include:
- ROW_NUMBER(): Assigns a unique number to each row based on a specified order.
- RANK() and DENSE_RANK(): Rank data based on a specified order, handling ties differently.
- LAG() and LEAD(): Access data from preceding or following rows within a partition.
- SUM(), AVG(), MIN(), MAX(): Aggregations over a defined window of rows.
Here is an amazing resources to learn & practice SQL: https://bit.ly/3FxxKPz
Share with credits: https://news.1rj.ru/str/sqlspecialist
Hope it helps :)
- Basic Queries: SELECT, FROM, WHERE clauses.
- Sorting and Filtering: ORDER BY, GROUP BY, HAVING.
- Joins: INNER JOIN, LEFT JOIN, RIGHT JOIN.
- Aggregation Functions: COUNT, SUM, AVG, MIN, MAX.
- Subqueries: Embedding queries within queries.
- Data Modification: INSERT, UPDATE, DELETE.
- Indexes: Optimizing query performance.
- Normalization: Ensuring efficient database design.
- Views: Creating virtual tables for simplified queries.
- Understanding Database Relationships: One-to-One, One-to-Many, Many-to-Many.
Window functions are also important for data analysts. They allow for advanced data analysis and manipulation within specified subsets of data. Commonly used window functions include:
- ROW_NUMBER(): Assigns a unique number to each row based on a specified order.
- RANK() and DENSE_RANK(): Rank data based on a specified order, handling ties differently.
- LAG() and LEAD(): Access data from preceding or following rows within a partition.
- SUM(), AVG(), MIN(), MAX(): Aggregations over a defined window of rows.
Here is an amazing resources to learn & practice SQL: https://bit.ly/3FxxKPz
Share with credits: https://news.1rj.ru/str/sqlspecialist
Hope it helps :)
❤4👏1
Essential Topics to Master Data Analytics Interviews: 🚀
SQL:
1. Foundations
- SELECT statements with WHERE, ORDER BY, GROUP BY, HAVING
- Basic JOINS (INNER, LEFT, RIGHT, FULL)
- Navigate through simple databases and tables
2. Intermediate SQL
- Utilize Aggregate functions (COUNT, SUM, AVG, MAX, MIN)
- Embrace Subqueries and nested queries
- Master Common Table Expressions (WITH clause)
- Implement CASE statements for logical queries
3. Advanced SQL
- Explore Advanced JOIN techniques (self-join, non-equi join)
- Dive into Window functions (OVER, PARTITION BY, ROW_NUMBER, RANK, DENSE_RANK, lead, lag)
- Optimize queries with indexing
- Execute Data manipulation (INSERT, UPDATE, DELETE)
Python:
1. Python Basics
- Grasp Syntax, variables, and data types
- Command Control structures (if-else, for and while loops)
- Understand Basic data structures (lists, dictionaries, sets, tuples)
- Master Functions, lambda functions, and error handling (try-except)
- Explore Modules and packages
2. Pandas & Numpy
- Create and manipulate DataFrames and Series
- Perfect Indexing, selecting, and filtering data
- Handle missing data (fillna, dropna)
- Aggregate data with groupby, summarizing data
- Merge, join, and concatenate datasets
3. Data Visualization with Python
- Plot with Matplotlib (line plots, bar plots, histograms)
- Visualize with Seaborn (scatter plots, box plots, pair plots)
- Customize plots (sizes, labels, legends, color palettes)
- Introduction to interactive visualizations (e.g., Plotly)
Excel:
1. Excel Essentials
- Conduct Cell operations, basic formulas (SUMIFS, COUNTIFS, AVERAGEIFS, IF, AND, OR, NOT & Nested Functions etc.)
- Dive into charts and basic data visualization
- Sort and filter data, use Conditional formatting
2. Intermediate Excel
- Master Advanced formulas (V/XLOOKUP, INDEX-MATCH, nested IF)
- Leverage PivotTables and PivotCharts for summarizing data
- Utilize data validation tools
- Employ What-if analysis tools (Data Tables, Goal Seek)
3. Advanced Excel
- Harness Array formulas and advanced functions
- Dive into Data Model & Power Pivot
- Explore Advanced Filter, Slicers, and Timelines in Pivot Tables
- Create dynamic charts and interactive dashboards
Power BI:
1. Data Modeling in Power BI
- Import data from various sources
- Establish and manage relationships between datasets
- Grasp Data modeling basics (star schema, snowflake schema)
2. Data Transformation in Power BI
- Use Power Query for data cleaning and transformation
- Apply advanced data shaping techniques
- Create Calculated columns and measures using DAX
3. Data Visualization and Reporting in Power BI
- Craft interactive reports and dashboards
- Utilize Visualizations (bar, line, pie charts, maps)
- Publish and share reports, schedule data refreshes
Statistics Fundamentals:
- Mean, Median, Mode
- Standard Deviation, Variance
- Probability Distributions, Hypothesis Testing
- P-values, Confidence Intervals
- Correlation, Simple Linear Regression
- Normal Distribution, Binomial Distribution, Poisson Distribution.
Show some ❤️ if you're ready to elevate your data analytics journey! 📊
ENJOY LEARNING 👍👍
SQL:
1. Foundations
- SELECT statements with WHERE, ORDER BY, GROUP BY, HAVING
- Basic JOINS (INNER, LEFT, RIGHT, FULL)
- Navigate through simple databases and tables
2. Intermediate SQL
- Utilize Aggregate functions (COUNT, SUM, AVG, MAX, MIN)
- Embrace Subqueries and nested queries
- Master Common Table Expressions (WITH clause)
- Implement CASE statements for logical queries
3. Advanced SQL
- Explore Advanced JOIN techniques (self-join, non-equi join)
- Dive into Window functions (OVER, PARTITION BY, ROW_NUMBER, RANK, DENSE_RANK, lead, lag)
- Optimize queries with indexing
- Execute Data manipulation (INSERT, UPDATE, DELETE)
Python:
1. Python Basics
- Grasp Syntax, variables, and data types
- Command Control structures (if-else, for and while loops)
- Understand Basic data structures (lists, dictionaries, sets, tuples)
- Master Functions, lambda functions, and error handling (try-except)
- Explore Modules and packages
2. Pandas & Numpy
- Create and manipulate DataFrames and Series
- Perfect Indexing, selecting, and filtering data
- Handle missing data (fillna, dropna)
- Aggregate data with groupby, summarizing data
- Merge, join, and concatenate datasets
3. Data Visualization with Python
- Plot with Matplotlib (line plots, bar plots, histograms)
- Visualize with Seaborn (scatter plots, box plots, pair plots)
- Customize plots (sizes, labels, legends, color palettes)
- Introduction to interactive visualizations (e.g., Plotly)
Excel:
1. Excel Essentials
- Conduct Cell operations, basic formulas (SUMIFS, COUNTIFS, AVERAGEIFS, IF, AND, OR, NOT & Nested Functions etc.)
- Dive into charts and basic data visualization
- Sort and filter data, use Conditional formatting
2. Intermediate Excel
- Master Advanced formulas (V/XLOOKUP, INDEX-MATCH, nested IF)
- Leverage PivotTables and PivotCharts for summarizing data
- Utilize data validation tools
- Employ What-if analysis tools (Data Tables, Goal Seek)
3. Advanced Excel
- Harness Array formulas and advanced functions
- Dive into Data Model & Power Pivot
- Explore Advanced Filter, Slicers, and Timelines in Pivot Tables
- Create dynamic charts and interactive dashboards
Power BI:
1. Data Modeling in Power BI
- Import data from various sources
- Establish and manage relationships between datasets
- Grasp Data modeling basics (star schema, snowflake schema)
2. Data Transformation in Power BI
- Use Power Query for data cleaning and transformation
- Apply advanced data shaping techniques
- Create Calculated columns and measures using DAX
3. Data Visualization and Reporting in Power BI
- Craft interactive reports and dashboards
- Utilize Visualizations (bar, line, pie charts, maps)
- Publish and share reports, schedule data refreshes
Statistics Fundamentals:
- Mean, Median, Mode
- Standard Deviation, Variance
- Probability Distributions, Hypothesis Testing
- P-values, Confidence Intervals
- Correlation, Simple Linear Regression
- Normal Distribution, Binomial Distribution, Poisson Distribution.
Show some ❤️ if you're ready to elevate your data analytics journey! 📊
ENJOY LEARNING 👍👍
❤7
Excel Scenario-Based Questions Interview Questions and Answers :
Scenario 1) Imagine you have a dataset with missing values. How would you approach this problem in Excel?
Answer:
To handle missing values in Excel:
1. Identify Missing Data:
Use filters to quickly find blank cells.
Apply conditional formatting:
Home → Conditional Formatting → New Rule → Format only cells that are blank.
2. Handle Missing Data:
Delete rows with missing critical data (if appropriate).
Fill missing values:
Use =IF(A2="", "N/A", A2) to replace blanks with “N/A”.
Use Fill Down (Ctrl + D) if the previous value applies.
Use functions like =AVERAGEIF(range, "<>", range) to fill with average.
3. Use Power Query (for large datasets):
Load data into Power Query and use “Replace Values” or “Remove Empty” options.
Scenario 2) You are given a dataset with multiple sheets. How would you consolidate the data for analysis?
Answer:
Approach 1: Manual Consolidation
1. Use Copy-Paste from each sheet into a master sheet.
2. Add a new column to identify the source sheet (optional but useful).
3. Convert the master data into a table for analysis.
Approach 2: Use Power Query (Recommended for large datasets)
1. Go to Data → Get & Transform → Get Data → From Workbook.
2. Load each sheet into Power Query.
3. Use the Append Queries option to merge all sheets.
4. Clean and transform as needed, then load it back to Excel.
Approach 3: Use VBA (Advanced Users)
Write a macro to loop through all sheets and append data to a master sheet.
Hope it helps :)
Scenario 1) Imagine you have a dataset with missing values. How would you approach this problem in Excel?
Answer:
To handle missing values in Excel:
1. Identify Missing Data:
Use filters to quickly find blank cells.
Apply conditional formatting:
Home → Conditional Formatting → New Rule → Format only cells that are blank.
2. Handle Missing Data:
Delete rows with missing critical data (if appropriate).
Fill missing values:
Use =IF(A2="", "N/A", A2) to replace blanks with “N/A”.
Use Fill Down (Ctrl + D) if the previous value applies.
Use functions like =AVERAGEIF(range, "<>", range) to fill with average.
3. Use Power Query (for large datasets):
Load data into Power Query and use “Replace Values” or “Remove Empty” options.
Scenario 2) You are given a dataset with multiple sheets. How would you consolidate the data for analysis?
Answer:
Approach 1: Manual Consolidation
1. Use Copy-Paste from each sheet into a master sheet.
2. Add a new column to identify the source sheet (optional but useful).
3. Convert the master data into a table for analysis.
Approach 2: Use Power Query (Recommended for large datasets)
1. Go to Data → Get & Transform → Get Data → From Workbook.
2. Load each sheet into Power Query.
3. Use the Append Queries option to merge all sheets.
4. Clean and transform as needed, then load it back to Excel.
Approach 3: Use VBA (Advanced Users)
Write a macro to loop through all sheets and append data to a master sheet.
Hope it helps :)
❤4