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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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Data Analysis

OLS Regression: The Key Ideas Explained

Gain confidence in OLS regression by mastering its theoretical foundation. Explore how to perform simple implementations in Excel, R, and Python.
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Josef Waples

January 8, 2025

Excel

Nested IF() in Excel: A Quick Solution for Many Conditions

Discover how to handle complex criteria in a single formula. Elevate your reporting in a way that saves time and effort and reduces mistakes.
Laiba Siddiqui's photo

Laiba Siddiqui

January 3, 2025

Data Analysis

The Demand Curve: How to Understand the Relationship Between Price and Sales

Learn how to use the demand curve to reveal a relationship between price and quantity sold, and use this knowledge to guide smarter decisions in competitive markets. Explore methods to find the optimal price to maximize overall revenue.
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Josef Waples

April 10, 2025

Excel

Excel Slicer: A Step-by-Step Guide to Advanced Filtering

Discover how to enhance your data analysis with the Excel slicer. Learn advanced techniques to build dynamic dashboards and streamline your workflow.
Laiba Siddiqui's photo

Laiba Siddiqui

January 3, 2025

Data Analysis

Variance Inflation Factor (VIF): Addressing Multicollinearity in Regression Analysis

Learn how to detect multicollinearity in regression models using the variance inflation factor (VIF), a key diagnostic tool. This tutorial explains how VIF is calculated, how to interpret its values, and techniques for addressing high VIF to improve the reliability of your regression modeling.
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Vikash Singh

November 18, 2024

Data Science

Pythagorean Theorem: Exploring Geometry's Fundamental Relation

From ancient Egyptian builders to modern data science, discover how a^² + b^² = c^² revolutionized mathematics and continues to shape our technological world.
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Vinod Chugani

November 17, 2024

Data Analysis

The Q-Q Plot: What It Means and How to Interpret It

Discover how Q-Q plots are a useful visual method to assess normality. Compare observed data to a theoretical distribution like the normal distribution to highlight deviations. Learn to diagnose model fit.
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Josef Waples

November 17, 2024

Excel

How to Remove Duplicates in Excel: 5 Best Methods

Learn how to use Excel’s built-in features, formulas, and even Power Query to tackle duplicates, along with best practices and troubleshooting tips for handling complex datasets.
Laiba Siddiqui's photo

Laiba Siddiqui

November 14, 2024

Excel

How to Highlight Duplicates in Excel

Explore how you can identify duplicate entries in Excel using Conditional Formatting, the COUNTIF() formula, and Power Query. Learn best practices and troubleshoot issues.
Laiba Siddiqui's photo

Laiba Siddiqui

November 13, 2024

Data Engineering

Getting Started with Microsoft Fabric: A Practical Guide

This tutorial walks you through Microsoft Fabric, showing you how to set up, connect data, build pipelines, and collaborate—all in one practical guide!
Kurtis Pykes 's photo

Kurtis Pykes

November 11, 2024