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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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Understanding Correlation: Measuring Relationships in Data
Learn how to identify relationships between variables using correlation. Discover the different types of correlation coefficients and their applications.
Josef Waples
June 24, 2025
Probability Mass Function: A Guide to Discrete Distributions
Learn how the probability mass function defines discrete probability distributions. Explore its properties, examples, and differences from probability density functions.
Vidhi Chugh
June 20, 2025
R mean() Function: Get Started with Averages
Calculate the average of numeric, logical, and weighted data using R’s built-in mean functions. Understand how to handle missing values and apply the function to vectors and data frames.
Josef Waples
June 19, 2025
RMSE Explained: A Guide to Regression Prediction Accuracy
Learn what RMSE means in regression analysis, how to calculate it, and when to use it to assess model performance. See Python and R examples with practical interpretations.
Elena Kosourova
June 30, 2025
How to Create a Sankey Diagram in Excel, Python, and R
From basic concepts to advanced implementation, learn to build effective Sankey diagrams using popular tools. Discover the key components, best practices, and design principles that make flow visualizations compelling and insightful.
Vinod Chugani
June 13, 2025
Least Squares Method: How to Find the Best Fit Line
Use this method to make better predictions from real-world data. Learn how to minimize errors and find the most reliable trend line.
Amberle McKee
June 12, 2025
The T-Distribution: A Key Tool for Small Sample Inference
Understand how the t-distribution helps when sample sizes are small or population variance is unknown. Compare it to the normal and Z-distributions to learn when each is appropriate.
Vidhi Chugh
June 11, 2025
PI() in Excel: How to Use and Apply π in Your Formulas
Learn how to use PI() in Excel so you have precision with mathematical formulas. Discover examples, syntax details, and tips for harnessing π in calculations.
Josef Waples
June 11, 2025
Excel Time Formulas: Calculate, Format, and Manipulate Time in Excel
Master Excel time formulas to calculate durations, handle time over 24 hours, and format time values for clear, accurate reporting.
Samuel Shaibu
June 5, 2025
Law of Large Numbers: A Key to Understanding Uncertainty
Understand how the law of large numbers supports statistical reasoning. See how it ensures consistency in averages over time and powers predictions in fields like sports, finance, and science.
Laiba Siddiqui
June 5, 2025
Introduction to the WHERE Clause in SQL
In this tutorial, you will be introduced to filtering rows in SQL using the WHERE clause.
Sayak Paul
May 29, 2025
Triangle Inequality: From Geometry to Machine Learning
The triangle inequality is more than just a geometric principle - it's a cornerstone of distance measures in data science. Discover how this elegant mathematical concept powers algorithms across computational geometry, optimization, and machine learning.
Vinod Chugani
May 27, 2025