ANOVA vs. Linear Regression

Same Data, Two Different Tests Explained

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ANOVA or linear regression — which statistics test should you use? In this clip, we run the same dataset both ways and show exactly how the results differ. When concentration is treated as a categorical variable, ANOVA tests whether group means differ. When it's treated as numeric, linear regression tests whether there's a relationship between the two variables. Both can be valid — the right choice depends on your hypothesis. Essential viewing for any student learning how to choose a statistical test.

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Some visuals from the video:

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 Interested in a bit more?

This webinar shows the full clip for how the graphs were made (minute 33:00 - 38:00).

Explore other graph-driven tests available on DataClassroom.

Check out Statistics Snippets and more on the DC blog.

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