Statistics
Chi-Square Test Guide
Categorical data analysis.
Test if categorical variables are independent.
Statistic
χ²=Σ(O-E)²/E.
When
- Survey by group
- Preference testing
- Goodness of fit
Interpret
If p<0.05, variables are related.
Frequently Asked Questions
Chi-square?
Tests categorical independence. χ²=Σ(O-E)²/E.
When?
Categorical data: surveys, preferences.
Interpret?
p<0.05=significantly related.