The Biggest Mistake Students Make With Chi-Square Tests
Struggling with Chi-Square Tests? Here is the no-BS guide to understanding it, complete with real-world examples and study shortcuts.
E
Emma Watkins · EdTech Specialist
Are you consistently losing points on Chi-Square Tests because of using it when expected cell counts are too low? If so, you're making the exact same error as 80% of your class.
Did you make this error?
- The Trap: using it when expected cell counts are too low
- The Proof: Read this scenario: If any expected cell frequency in your contingency table is less than 5, the Chi-Square approximation breaks down. Use Fisher's Exact Test instead.
If your logic doesn't match the proof above, you've fallen for the trap. Erase it and start over.
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