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# Data Analysis Tutorials

Get insights on the latest tools & methods that you can use to analyze your data more effectively. Our data analysis tutorials will help you develop your skills.
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## How to Calculate Standard Deviation in Excel

To calculate standard deviation in Excel, enter your data into a range of cells and use either =STDEV.S() for sample data or =STDEV.P() for population data.

Arunn Thevapalan

August 5, 2024

## How to Use the Python pop() Method

Learn how to use Python's pop() method to remove elements from lists and dictionaries, including how to remove items while iterating. Learn to avoid common errors like IndexError and KeyError.

Allan Ouko

July 31, 2024

## Understanding the SQL SUM() Function and Its Use Cases

Discover the power of the SQL SUM() function for data aggregation. Learn how to implement rolling sums, cumulative sums, and sum multiple columns effectively.

Allan Ouko

July 25, 2024

## How to Round Up a Number in Python

Discover three straightforward techniques to round up numbers in Python: using math.ceil() from the math module, using the decimal module, and NumPy.

Allan Ouko

July 22, 2024

## UNION vs UNION ALL in SQL

Discover the output and performance differences between UNION and UNION ALL: UNION removes duplicates while UNION ALL includes them.

Vikash Singh

July 19, 2024

## How to Combine VLOOKUP() with IF() in Excel

Combine VLOOKUP() with IF() for efficient data analysis, including conditional lookups, error handling, and dynamic column indexing.

Laiba Siddiqui

July 18, 2024

## How to Upgrade Python and Pip in Windows, MacOS, and Linux

Read our step-by-step instructions for how to upgrade Pip and Python on Windows, macOS, and Linux. Keep your environment up-to-date and compatible.

Samuel Shaibu

July 15, 2024

## How to Use the Python pass Statement

Learn to use the Python pass statement in loops, functions, and classes. Understand the pass statement's importance in code execution and readability.

Allan Ouko

July 11, 2024

## Conditional Formatting in Excel: A Beginner’s Guide

Explore conditional formatting in Excel with simple to advanced examples and their best practices.

Joleen Bothma

July 8, 2024