Which function is used to count the total number of rows in a table?
Anonymous Quiz
11%
A) SUM()
82%
B) COUNT()
2%
C) AVG()
6%
D) TOTAL()
โค6
What is the difference between COUNT(*) and COUNT(column_name)?
Anonymous Quiz
15%
A) Both behave the same
29%
B) COUNT(*) ignores NULL values
36%
C) COUNT(column_name) ignores NULL values
19%
D) COUNT(column_name) counts all rows
โค3๐ฅ1
Which clause is used to group rows with the same values?
Anonymous Quiz
11%
A) ORDER BY
8%
B) WHERE
71%
C) GROUP BY
10%
D) HAVING
Which clause is used to filter grouped results?
Anonymous Quiz
19%
A) WHERE
33%
B) GROUP BY
44%
C) HAVING
4%
D) LIMIT
โค3
๐ Top 10 Careers in Data Analytics (2026)๐๐ผ
1๏ธโฃ Data Analyst
โถ๏ธ Skills: Excel, SQL, Power BI, Data Cleaning, Data Visualization
๐ฐ Avg Salary: โน6โ15 LPA (India) / 90K+ USD (Global)
2๏ธโฃ Business Intelligence (BI) Analyst
โถ๏ธ Skills: Power BI, Tableau, SQL, Data Modeling, Dashboard Design
๐ฐ Avg Salary: โน8โ18 LPA / 100K+
3๏ธโฃ Product Analyst
โถ๏ธ Skills: SQL, Python, A/B Testing, Product Metrics, Experimentation
๐ฐ Avg Salary: โน12โ25 LPA / 120K+
4๏ธโฃ Analytics Engineer
โถ๏ธ Skills: SQL, dbt, Data Modeling, Data Warehousing, ETL
๐ฐ Avg Salary: โน12โ22 LPA / 120K+
5๏ธโฃ Marketing Analyst
โถ๏ธ Skills: Google Analytics, SQL, Excel, Customer Segmentation, Attribution Analysis
๐ฐ Avg Salary: โน7โ16 LPA / 95K+
6๏ธโฃ Financial Data Analyst
โถ๏ธ Skills: Excel, SQL, Forecasting, Financial Modeling, Power BI
๐ฐ Avg Salary: โน8โ18 LPA / 105K+
7๏ธโฃ Data Visualization Specialist
โถ๏ธ Skills: Tableau, Power BI, Storytelling with Data, Dashboard Design
๐ฐ Avg Salary: โน7โ17 LPA / 100K+
8๏ธโฃ Operations Analyst
โถ๏ธ Skills: SQL, Excel, Process Analysis, Business Metrics, Reporting
๐ฐ Avg Salary: โน6โ15 LPA / 95K+
9๏ธโฃ Risk & Fraud Analyst
โถ๏ธ Skills: SQL, Python, Fraud Detection Models, Statistical Analysis
๐ฐ Avg Salary: โน10โ20 LPA / 110K+
๐ Analytics Consultant
โถ๏ธ Skills: SQL, BI Tools, Business Strategy, Stakeholder Communication
๐ฐ Avg Salary: โน12โ28 LPA / 125K+
๐ Data Analytics is one of the most practical and fastest ways to enter the tech industry in 2026.
Double Tap โค๏ธ if this helped you!
1๏ธโฃ Data Analyst
โถ๏ธ Skills: Excel, SQL, Power BI, Data Cleaning, Data Visualization
๐ฐ Avg Salary: โน6โ15 LPA (India) / 90K+ USD (Global)
2๏ธโฃ Business Intelligence (BI) Analyst
โถ๏ธ Skills: Power BI, Tableau, SQL, Data Modeling, Dashboard Design
๐ฐ Avg Salary: โน8โ18 LPA / 100K+
3๏ธโฃ Product Analyst
โถ๏ธ Skills: SQL, Python, A/B Testing, Product Metrics, Experimentation
๐ฐ Avg Salary: โน12โ25 LPA / 120K+
4๏ธโฃ Analytics Engineer
โถ๏ธ Skills: SQL, dbt, Data Modeling, Data Warehousing, ETL
๐ฐ Avg Salary: โน12โ22 LPA / 120K+
5๏ธโฃ Marketing Analyst
โถ๏ธ Skills: Google Analytics, SQL, Excel, Customer Segmentation, Attribution Analysis
๐ฐ Avg Salary: โน7โ16 LPA / 95K+
6๏ธโฃ Financial Data Analyst
โถ๏ธ Skills: Excel, SQL, Forecasting, Financial Modeling, Power BI
๐ฐ Avg Salary: โน8โ18 LPA / 105K+
7๏ธโฃ Data Visualization Specialist
โถ๏ธ Skills: Tableau, Power BI, Storytelling with Data, Dashboard Design
๐ฐ Avg Salary: โน7โ17 LPA / 100K+
8๏ธโฃ Operations Analyst
โถ๏ธ Skills: SQL, Excel, Process Analysis, Business Metrics, Reporting
๐ฐ Avg Salary: โน6โ15 LPA / 95K+
9๏ธโฃ Risk & Fraud Analyst
โถ๏ธ Skills: SQL, Python, Fraud Detection Models, Statistical Analysis
๐ฐ Avg Salary: โน10โ20 LPA / 110K+
๐ Analytics Consultant
โถ๏ธ Skills: SQL, BI Tools, Business Strategy, Stakeholder Communication
๐ฐ Avg Salary: โน12โ28 LPA / 125K+
๐ Data Analytics is one of the most practical and fastest ways to enter the tech industry in 2026.
Double Tap โค๏ธ if this helped you!
โค42๐2
๐ Essential SQL Concepts Every Data Analyst Must Know
๐ SQL is the most important skill for Data Analysts. Almost every analytics job requires working with databases to extract, filter, analyze, and summarize data.
Understanding the following SQL concepts will help you write efficient queries and solve real business problems with data.
1๏ธโฃ SELECT Statement (Data Retrieval)
What it is: Retrieves data from a table.
SELECT name, salary
FROM employees;
Use cases: Retrieving specific columns, viewing datasets, extracting required information.
2๏ธโฃ WHERE Clause (Filtering Data)
What it is: Filters rows based on specific conditions.
SELECT *
FROM orders
WHERE order_amount > 500;
Common conditions: =, >, <, >=, <=, BETWEEN, IN, LIKE
3๏ธโฃ ORDER BY (Sorting Data)
What it is: Sorts query results in ascending or descending order.
SELECT name, salary
FROM employees
ORDER BY salary DESC;
Sorting options: ASC (default), DESC
4๏ธโฃ GROUP BY (Aggregation)
What it is: Groups rows with same values into summary rows.
SELECT department, COUNT(*)
FROM employees
GROUP BY department;
Use cases: Sales per region, customers per country, orders per product category.
5๏ธโฃ Aggregate Functions
What they do: Perform calculations on multiple rows.
SELECT AVG(salary)
FROM employees;
Common functions: COUNT(), SUM(), AVG(), MIN(), MAX()
6๏ธโฃ HAVING Clause
What it is: Filters grouped data after aggregation.
SELECT department, COUNT(*)
FROM employees
GROUP BY department
HAVING COUNT(*) > 5;
Key difference: WHERE filters rows before grouping, HAVING filters groups after aggregation.
7๏ธโฃ SQL JOINS (Combining Tables)
What they do:
Combine tables.
-- INNER JOIN
SELECT orders.order_id, customers.customer_name
FROM orders
INNER JOIN customers
ON orders.customer_id = customers.customer_id;
-- LEFT JOIN
SELECT customers.customer_name, orders.order_id
FROM customers
LEFT JOIN orders
ON customers.customer_id = orders.customer_id;
Common types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
8๏ธโฃ Subqueries
What it is: Query inside another query.
SELECT name
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
Use cases: Comparing values, filtering based on aggregated results.
9๏ธโฃ Common Table Expressions (CTE)
What it is: Temporary result set used inside a query.
WITH high_salary AS (
SELECT name, salary
FROM employees
WHERE salary > 70000
)
SELECT *
FROM high_salary;
Benefits: Cleaner queries, easier debugging, better readability.
๐ Window Functions
What they do: Perform calculations across rows related to current row.
SELECT name, salary, RANK() OVER (ORDER BY salary DESC) AS salary_rank
FROM employees;
Common functions: ROW_NUMBER(), RANK(), DENSE_RANK(), LAG(), LEAD()
Why SQL is Critical for Data Analysts
โข Extract data from databases
โข Analyze large datasets efficiently
โข Generate reports and dashboards
โข Support business decision-making
SQL Resources: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v
Double Tap โฅ๏ธ For More
๐ SQL is the most important skill for Data Analysts. Almost every analytics job requires working with databases to extract, filter, analyze, and summarize data.
Understanding the following SQL concepts will help you write efficient queries and solve real business problems with data.
1๏ธโฃ SELECT Statement (Data Retrieval)
What it is: Retrieves data from a table.
SELECT name, salary
FROM employees;
Use cases: Retrieving specific columns, viewing datasets, extracting required information.
2๏ธโฃ WHERE Clause (Filtering Data)
What it is: Filters rows based on specific conditions.
SELECT *
FROM orders
WHERE order_amount > 500;
Common conditions: =, >, <, >=, <=, BETWEEN, IN, LIKE
3๏ธโฃ ORDER BY (Sorting Data)
What it is: Sorts query results in ascending or descending order.
SELECT name, salary
FROM employees
ORDER BY salary DESC;
Sorting options: ASC (default), DESC
4๏ธโฃ GROUP BY (Aggregation)
What it is: Groups rows with same values into summary rows.
SELECT department, COUNT(*)
FROM employees
GROUP BY department;
Use cases: Sales per region, customers per country, orders per product category.
5๏ธโฃ Aggregate Functions
What they do: Perform calculations on multiple rows.
SELECT AVG(salary)
FROM employees;
Common functions: COUNT(), SUM(), AVG(), MIN(), MAX()
6๏ธโฃ HAVING Clause
What it is: Filters grouped data after aggregation.
SELECT department, COUNT(*)
FROM employees
GROUP BY department
HAVING COUNT(*) > 5;
Key difference: WHERE filters rows before grouping, HAVING filters groups after aggregation.
7๏ธโฃ SQL JOINS (Combining Tables)
What they do:
Combine tables.
-- INNER JOIN
SELECT orders.order_id, customers.customer_name
FROM orders
INNER JOIN customers
ON orders.customer_id = customers.customer_id;
-- LEFT JOIN
SELECT customers.customer_name, orders.order_id
FROM customers
LEFT JOIN orders
ON customers.customer_id = orders.customer_id;
Common types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
8๏ธโฃ Subqueries
What it is: Query inside another query.
SELECT name
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
Use cases: Comparing values, filtering based on aggregated results.
9๏ธโฃ Common Table Expressions (CTE)
What it is: Temporary result set used inside a query.
WITH high_salary AS (
SELECT name, salary
FROM employees
WHERE salary > 70000
)
SELECT *
FROM high_salary;
Benefits: Cleaner queries, easier debugging, better readability.
๐ Window Functions
What they do: Perform calculations across rows related to current row.
SELECT name, salary, RANK() OVER (ORDER BY salary DESC) AS salary_rank
FROM employees;
Common functions: ROW_NUMBER(), RANK(), DENSE_RANK(), LAG(), LEAD()
Why SQL is Critical for Data Analysts
โข Extract data from databases
โข Analyze large datasets efficiently
โข Generate reports and dashboards
โข Support business decision-making
SQL Resources: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v
Double Tap โฅ๏ธ For More
โค19
Which JOIN returns only matching records from both tables?
Anonymous Quiz
4%
A) LEFT JOIN
5%
B) RIGHT JOIN
75%
C) INNER JOIN
16%
D) FULL JOIN
โค3
Which JOIN returns all rows from the left table and matching rows from the right table?
Anonymous Quiz
6%
A) INNER JOIN
74%
B) LEFT JOIN
12%
C) RIGHT JOIN
7%
D) FULL JOIN
โค3
What happens when there is no matching record in a LEFT JOIN?
Anonymous Quiz
8%
A) The row is removed
82%
B) The row appears with NULL values
7%
C) The query fails
2%
D) The row duplicates
โค2
Which JOIN returns all rows from both tables even if there is no match?
Anonymous Quiz
13%
A) INNER JOIN
4%
B) LEFT JOIN
4%
C) RIGHT JOIN
78%
D) FULL JOIN
๐ฅ4
What is a SELF JOIN?
Anonymous Quiz
11%
A) Joining two databases
84%
B) Joining a table with itself
2%
C) Joining three tables
4%
D) Joining unrelated tables
โค2
๐ Top Projects for Data Analytics Portfolio ๐๐ป
๐ 1. Sales Dashboard (Excel / Power BI / Tableau)
โถ๏ธ Analyze monthly/quarterly sales by region, category
โถ๏ธ Show KPIs: Revenue, YoY Growth, Profit Margin
๐ 2. E-commerce Customer Segmentation (Python + Clustering)
โถ๏ธ Use RFM (Recency, Frequency, Monetary) model
โถ๏ธ Visualize clusters with Seaborn / Plotly
๐ 3. Churn Prediction Model (Python + ML)
โถ๏ธ Dataset: Telecom or SaaS customer data
โถ๏ธ Techniques: Logistic Regression, Decision Tree
๐ฆ 4. Supply Chain Delay Analysis (SQL + Tableau)
โถ๏ธ Identify causes of late deliveries using historical order data
โถ๏ธ Visualize supplier-wise performance
๐ 5. A/B Testing for Product Feature (SQL + Python)
โถ๏ธ Simulate or use real test data (e.g. button click-through rates)
โถ๏ธ Metrics: Conversion Rate, Significance Test
๐ 6. COVID-19 Trend Tracker (Python + Dash)
โถ๏ธ Scrape or pull live data from APIs
โถ๏ธ Show cases, recovery, testing rates by country
๐ 7. HR Analytics โ Attrition Analysis (Excel / Python)
โถ๏ธ Predict or explore employee exits
โถ๏ธ Use decision trees or visual storytelling
๐ก Tip: Upload projects to GitHub + create a simple portfolio site or blog to stand out.
๐ฌ Double Tap โค๏ธ For More
๐ 1. Sales Dashboard (Excel / Power BI / Tableau)
โถ๏ธ Analyze monthly/quarterly sales by region, category
โถ๏ธ Show KPIs: Revenue, YoY Growth, Profit Margin
๐ 2. E-commerce Customer Segmentation (Python + Clustering)
โถ๏ธ Use RFM (Recency, Frequency, Monetary) model
โถ๏ธ Visualize clusters with Seaborn / Plotly
๐ 3. Churn Prediction Model (Python + ML)
โถ๏ธ Dataset: Telecom or SaaS customer data
โถ๏ธ Techniques: Logistic Regression, Decision Tree
๐ฆ 4. Supply Chain Delay Analysis (SQL + Tableau)
โถ๏ธ Identify causes of late deliveries using historical order data
โถ๏ธ Visualize supplier-wise performance
๐ 5. A/B Testing for Product Feature (SQL + Python)
โถ๏ธ Simulate or use real test data (e.g. button click-through rates)
โถ๏ธ Metrics: Conversion Rate, Significance Test
๐ 6. COVID-19 Trend Tracker (Python + Dash)
โถ๏ธ Scrape or pull live data from APIs
โถ๏ธ Show cases, recovery, testing rates by country
๐ 7. HR Analytics โ Attrition Analysis (Excel / Python)
โถ๏ธ Predict or explore employee exits
โถ๏ธ Use decision trees or visual storytelling
๐ก Tip: Upload projects to GitHub + create a simple portfolio site or blog to stand out.
๐ฌ Double Tap โค๏ธ For More
โค44
What is a Subquery in SQL?
Anonymous Quiz
5%
A) A query that updates data
91%
B) A query inside another SQL query
2%
C) A query that deletes tables
2%
D) A query used only for joins
โค3๐ฅฐ2
Where can subqueries be used in SQL?
Anonymous Quiz
11%
A) SELECT clause
23%
B) WHERE clause
6%
C) FROM clause
60%
D) All of the above
โค3
What does the EXISTS operator do?
Anonymous Quiz
36%
A) Checks if a table exists
23%
B) Checks if a column exists
38%
C) Checks if a subquery returns any rows
3%
D) Creates a new table
What keyword is used to create a Common Table Expression (CTE)?
Anonymous Quiz
35%
A) CREATE
44%
B) WITH
11%
C) TEMP
10%
D) SUBQUERY
โค1
What is the main advantage of CTEs?
Anonymous Quiz
29%
A) Faster execution always
60%
B) Better readability and structure
7%
C) Replace tables permanently
4%
D) Used only for joins
โค3
Quick SQL functions cheat sheet for beginners โ
Aggregate Functions
COUNT(*): Counts rows.
SUM(column): Total sum.
AVG(column): Average value.
MAX(column): Maximum value.
MIN(column): Minimum value.
String Functions
CONCAT(a, b, โฆ): Concatenates strings.
SUBSTRING(s, start, length): Extracts part of a string.
UPPER(s) / LOWER(s): Converts string case.
TRIM(s): Removes leading/trailing spaces.
Date Time Functions
CURRENT_DATE / CURRENT_TIME / CURRENT_TIMESTAMP: Current date/time.
EXTRACT(unit FROM date): Retrieves a date part (e.g., year, month).
DATE_ADD(date, INTERVAL n unit): Adds an interval to a date.
Numeric Functions
ROUND(num, decimals): Rounds to a specified decimal.
CEIL(num) / FLOOR(num): Rounds up/down.
ABS(num): Absolute value.
MOD(a, b): Returns the remainder.
Control Flow Functions
CASE: Conditional logic.
COALESCE(val1, val2, โฆ): Returns the first non-null value.
Like for more free Cheatsheets โค๏ธ
Share with credits: https://t.me/sqlspecialist
Hope it helps :)
Aggregate Functions
COUNT(*): Counts rows.
SUM(column): Total sum.
AVG(column): Average value.
MAX(column): Maximum value.
MIN(column): Minimum value.
String Functions
CONCAT(a, b, โฆ): Concatenates strings.
SUBSTRING(s, start, length): Extracts part of a string.
UPPER(s) / LOWER(s): Converts string case.
TRIM(s): Removes leading/trailing spaces.
Date Time Functions
CURRENT_DATE / CURRENT_TIME / CURRENT_TIMESTAMP: Current date/time.
EXTRACT(unit FROM date): Retrieves a date part (e.g., year, month).
DATE_ADD(date, INTERVAL n unit): Adds an interval to a date.
Numeric Functions
ROUND(num, decimals): Rounds to a specified decimal.
CEIL(num) / FLOOR(num): Rounds up/down.
ABS(num): Absolute value.
MOD(a, b): Returns the remainder.
Control Flow Functions
CASE: Conditional logic.
COALESCE(val1, val2, โฆ): Returns the first non-null value.
Like for more free Cheatsheets โค๏ธ
Share with credits: https://t.me/sqlspecialist
Hope it helps :)
โค23
Don't Confuse to learn Python.
Learn This Concept to be proficient in Python.
๐๐ฎ๐๐ถ๐ฐ๐ ๐ผ๐ณ ๐ฃ๐๐๐ต๐ผ๐ป:
- Python Syntax
- Data Types
- Variables
- Operators
- Control Structures:
if-elif-else
Loops
Break and Continue
try-except block
- Functions
- Modules and Packages
๐ข๐ฏ๐ท๐ฒ๐ฐ๐-๐ข๐ฟ๐ถ๐ฒ๐ป๐๐ฒ๐ฑ ๐ฃ๐ฟ๐ผ๐ด๐ฟ๐ฎ๐บ๐บ๐ถ๐ป๐ด ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Classes and Objects
- Inheritance
- Polymorphism
- Encapsulation
- Abstraction
๐ฃ๐๐๐ต๐ผ๐ป ๐๐ถ๐ฏ๐ฟ๐ฎ๐ฟ๐ถ๐ฒ๐:
- Pandas
- Numpy
๐ฃ๐ฎ๐ป๐ฑ๐ฎ๐:
- What is Pandas?
- Installing Pandas
- Importing Pandas
- Pandas Data Structures (Series, DataFrame, Index)
๐ช๐ผ๐ฟ๐ธ๐ถ๐ป๐ด ๐๐ถ๐๐ต ๐๐ฎ๐๐ฎ๐๐ฟ๐ฎ๐บ๐ฒ๐:
- Creating DataFrames
- Accessing Data in DataFrames
- Filtering and Selecting Data
- Adding and Removing Columns
- Merging and Joining DataFrames
- Grouping and Aggregating Data
- Pivot Tables
๐๐ฎ๐๐ฎ ๐๐น๐ฒ๐ฎ๐ป๐ถ๐ป๐ด ๐ฎ๐ป๐ฑ ๐ฃ๐ฟ๐ฒ๐ฝ๐ฎ๐ฟ๐ฎ๐๐ถ๐ผ๐ป:
- Handling Missing Values
- Handling Duplicates
- Data Formatting
- Data Transformation
- Data Normalization
๐๐ฑ๐๐ฎ๐ป๐ฐ๐ฒ๐ฑ ๐ง๐ผ๐ฝ๐ถ๐ฐ๐:
- Handling Large Datasets with Dask
- Handling Categorical Data with Pandas
- Handling Text Data with Pandas
- Using Pandas with Scikit-learn
- Performance Optimization with Pandas
๐๐ฎ๐๐ฎ ๐ฆ๐๐ฟ๐๐ฐ๐๐๐ฟ๐ฒ๐ ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Lists
- Tuples
- Dictionaries
- Sets
๐๐ถ๐น๐ฒ ๐๐ฎ๐ป๐ฑ๐น๐ถ๐ป๐ด ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Reading and Writing Text Files
- Reading and Writing Binary Files
- Working with CSV Files
- Working with JSON Files
๐ก๐๐บ๐ฝ๐:
- What is NumPy?
- Installing NumPy
- Importing NumPy
- NumPy Arrays
๐ก๐๐บ๐ฃ๐ ๐๐ฟ๐ฟ๐ฎ๐ ๐ข๐ฝ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐:
- Creating Arrays
- Accessing Array Elements
- Slicing and Indexing
- Reshaping Arrays
- Combining Arrays
- Splitting Arrays
- Arithmetic Operations
- Broadcasting
๐ช๐ผ๐ฟ๐ธ๐ถ๐ป๐ด ๐๐ถ๐๐ต ๐๐ฎ๐๐ฎ ๐ถ๐ป ๐ก๐๐บ๐ฃ๐:
- Reading and Writing Data with NumPy
- Filtering and Sorting Data
- Data Manipulation with NumPy
- Interpolation
- Fourier Transforms
- Window Functions
๐ฃ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ ๐ข๐ฝ๐๐ถ๐บ๐ถ๐๐ฎ๐๐ถ๐ผ๐ป ๐๐ถ๐๐ต ๐ก๐๐บ๐ฃ๐:
- Vectorization
- Memory Management
- Multithreading and Multiprocessing
- Parallel Computing
Like this post if you need more content like this ๐โค๏ธ
Learn This Concept to be proficient in Python.
๐๐ฎ๐๐ถ๐ฐ๐ ๐ผ๐ณ ๐ฃ๐๐๐ต๐ผ๐ป:
- Python Syntax
- Data Types
- Variables
- Operators
- Control Structures:
if-elif-else
Loops
Break and Continue
try-except block
- Functions
- Modules and Packages
๐ข๐ฏ๐ท๐ฒ๐ฐ๐-๐ข๐ฟ๐ถ๐ฒ๐ป๐๐ฒ๐ฑ ๐ฃ๐ฟ๐ผ๐ด๐ฟ๐ฎ๐บ๐บ๐ถ๐ป๐ด ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Classes and Objects
- Inheritance
- Polymorphism
- Encapsulation
- Abstraction
๐ฃ๐๐๐ต๐ผ๐ป ๐๐ถ๐ฏ๐ฟ๐ฎ๐ฟ๐ถ๐ฒ๐:
- Pandas
- Numpy
๐ฃ๐ฎ๐ป๐ฑ๐ฎ๐:
- What is Pandas?
- Installing Pandas
- Importing Pandas
- Pandas Data Structures (Series, DataFrame, Index)
๐ช๐ผ๐ฟ๐ธ๐ถ๐ป๐ด ๐๐ถ๐๐ต ๐๐ฎ๐๐ฎ๐๐ฟ๐ฎ๐บ๐ฒ๐:
- Creating DataFrames
- Accessing Data in DataFrames
- Filtering and Selecting Data
- Adding and Removing Columns
- Merging and Joining DataFrames
- Grouping and Aggregating Data
- Pivot Tables
๐๐ฎ๐๐ฎ ๐๐น๐ฒ๐ฎ๐ป๐ถ๐ป๐ด ๐ฎ๐ป๐ฑ ๐ฃ๐ฟ๐ฒ๐ฝ๐ฎ๐ฟ๐ฎ๐๐ถ๐ผ๐ป:
- Handling Missing Values
- Handling Duplicates
- Data Formatting
- Data Transformation
- Data Normalization
๐๐ฑ๐๐ฎ๐ป๐ฐ๐ฒ๐ฑ ๐ง๐ผ๐ฝ๐ถ๐ฐ๐:
- Handling Large Datasets with Dask
- Handling Categorical Data with Pandas
- Handling Text Data with Pandas
- Using Pandas with Scikit-learn
- Performance Optimization with Pandas
๐๐ฎ๐๐ฎ ๐ฆ๐๐ฟ๐๐ฐ๐๐๐ฟ๐ฒ๐ ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Lists
- Tuples
- Dictionaries
- Sets
๐๐ถ๐น๐ฒ ๐๐ฎ๐ป๐ฑ๐น๐ถ๐ป๐ด ๐ถ๐ป ๐ฃ๐๐๐ต๐ผ๐ป:
- Reading and Writing Text Files
- Reading and Writing Binary Files
- Working with CSV Files
- Working with JSON Files
๐ก๐๐บ๐ฝ๐:
- What is NumPy?
- Installing NumPy
- Importing NumPy
- NumPy Arrays
๐ก๐๐บ๐ฃ๐ ๐๐ฟ๐ฟ๐ฎ๐ ๐ข๐ฝ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐:
- Creating Arrays
- Accessing Array Elements
- Slicing and Indexing
- Reshaping Arrays
- Combining Arrays
- Splitting Arrays
- Arithmetic Operations
- Broadcasting
๐ช๐ผ๐ฟ๐ธ๐ถ๐ป๐ด ๐๐ถ๐๐ต ๐๐ฎ๐๐ฎ ๐ถ๐ป ๐ก๐๐บ๐ฃ๐:
- Reading and Writing Data with NumPy
- Filtering and Sorting Data
- Data Manipulation with NumPy
- Interpolation
- Fourier Transforms
- Window Functions
๐ฃ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ ๐ข๐ฝ๐๐ถ๐บ๐ถ๐๐ฎ๐๐ถ๐ผ๐ป ๐๐ถ๐๐ต ๐ก๐๐บ๐ฃ๐:
- Vectorization
- Memory Management
- Multithreading and Multiprocessing
- Parallel Computing
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Quick Excel Functions Cheat Sheet for Beginners ๐โ๏ธ
Excel offers powerful functions for data analysis, calculations, and automationโperfect for beginners handling spreadsheets.
โAggregation Functions
โข SUM(range): Totals all values in a range, e.g., SUM(A1:A10).
โข AVERAGE(range): Computes the mean of numbers, ignoring blanks.
โข COUNT(range): Counts cells with numbers.
โข COUNTA(range): Counts non-empty cells.
โข MAX(range): Finds the highest value.
โข MIN(range): Finds the lowest value.
โLookup Functions
โข VLOOKUP(value, table, col_index, [range_lookup]): Searches vertically for a value and returns from specified column.
โข HLOOKUP(value, table, row_index, [range_lookup]): Searches horizontally.
โข INDEX(range, row_num, [column_num]): Returns value at specific position.
โข MATCH(lookup_value, range, [match_type]): Finds position of a value.
โLogical Functions
โข IF(condition, true_value, false_value): Executes based on condition, e.g., IF(A1>10, "High", "Low").
โข AND(condition1, condition2): True if all conditions met.
โข OR(condition1, condition2): True if any condition met.
โข NOT(logical): Reverses TRUE/FALSE.
โText Functions
โข CONCATENATE(text1, text2): Joins text strings (or use operator).
โข LEFT(text, num_chars): Extracts from start.
โข RIGHT(text, num_chars): Extracts from end.
โข LEN(text): Counts characters.
โข TRIM(text): Removes extra spaces.
โDate Time Functions
โข TODAY(): Current date.
โข NOW(): Current date and time.
โข YEAR(date): Extracts year.
โข MONTH(date): Extracts month.
โข DATEDIF(start_date, end_date, unit): Calculates interval (Y/M/D).
โMath Stats Functions
โข ROUND(number, num_digits): Rounds to digits.
โข SUMIF(range, criteria, sum_range): Sums based on condition.
โข COUNTIF(range, criteria): Counts based on condition.
โข ABS(number): Absolute value.
Excel Resources: https://whatsapp.com/channel/0029VaifY548qIzv0u1AHz3i
Double Tap โฅ๏ธ For More
Excel offers powerful functions for data analysis, calculations, and automationโperfect for beginners handling spreadsheets.
โAggregation Functions
โข SUM(range): Totals all values in a range, e.g., SUM(A1:A10).
โข AVERAGE(range): Computes the mean of numbers, ignoring blanks.
โข COUNT(range): Counts cells with numbers.
โข COUNTA(range): Counts non-empty cells.
โข MAX(range): Finds the highest value.
โข MIN(range): Finds the lowest value.
โLookup Functions
โข VLOOKUP(value, table, col_index, [range_lookup]): Searches vertically for a value and returns from specified column.
โข HLOOKUP(value, table, row_index, [range_lookup]): Searches horizontally.
โข INDEX(range, row_num, [column_num]): Returns value at specific position.
โข MATCH(lookup_value, range, [match_type]): Finds position of a value.
โLogical Functions
โข IF(condition, true_value, false_value): Executes based on condition, e.g., IF(A1>10, "High", "Low").
โข AND(condition1, condition2): True if all conditions met.
โข OR(condition1, condition2): True if any condition met.
โข NOT(logical): Reverses TRUE/FALSE.
โText Functions
โข CONCATENATE(text1, text2): Joins text strings (or use operator).
โข LEFT(text, num_chars): Extracts from start.
โข RIGHT(text, num_chars): Extracts from end.
โข LEN(text): Counts characters.
โข TRIM(text): Removes extra spaces.
โDate Time Functions
โข TODAY(): Current date.
โข NOW(): Current date and time.
โข YEAR(date): Extracts year.
โข MONTH(date): Extracts month.
โข DATEDIF(start_date, end_date, unit): Calculates interval (Y/M/D).
โMath Stats Functions
โข ROUND(number, num_digits): Rounds to digits.
โข SUMIF(range, criteria, sum_range): Sums based on condition.
โข COUNTIF(range, criteria): Counts based on condition.
โข ABS(number): Absolute value.
Excel Resources: https://whatsapp.com/channel/0029VaifY548qIzv0u1AHz3i
Double Tap โฅ๏ธ For More
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