The Biggest Mistake Students Make With ANOVA

Picture this: you're grinding through homework, and suddenly a ANOVA question brings you to a dead stop. It's frustrating, but the fix is actually simpler than you think.

Did you make this error?

• The Trap: forgetting to test the homogeneity of variances
• The Proof: Read this scenario: Before running an ANOVA to compare 3 groups, you must check if their variances are roughly equal. If they aren't, the F-test is invalid.

If your logic doesn't match the proof above, you've fallen for the trap. Erase it and start over.

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