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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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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.
Josef Waples
January 8, 2025
How to Remove Spaces in Excel: 5 Good Methods
Remove unnecessary spaces, including leading, trailing, and extra spaces, to keep your data clear. This guide covers TRIM(), SUBSTITUTE(), and CLEAN() functions, plus practical tips to ensure spreadsheets remain accurate and easy to work with.
Laiba Siddiqui
January 5, 2025
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
January 3, 2025
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.
Josef Waples
April 10, 2025
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
January 3, 2025
Harmonic Mean Explained: A Guide to Rates and Ratios
Discover how the harmonic mean handles rates and ratios in data science and finance. Learn its calculation methods and when to use it for more accurate analysis.
Vinod Chugani
November 26, 2024
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.
Vikash Singh
November 18, 2024
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.
Vinod Chugani
November 17, 2024
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.
Josef Waples
November 17, 2024
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
November 14, 2024
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
November 13, 2024
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
November 11, 2024