# Chi Square Test — Intuition, Examples, and Step-by-Step Calculation

## The best way to see if two variables are related

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You’ve probably heard of the term “Chi square test” at least once in your life if you have ever studied for the SAT, or worked in some science-related field. Chi-square test is used a lot in corporations, especially when making decisions involving, for instance, medical, product design, engineering, and nearly all research projects.

For you to understand what the chi square test is, you need to first know what…