Physics · Statistical Methods

When is the Chi-square (X2) test primarily used?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1When there are three or more groups for comparison
2When the data is in the form of frequencies or categorical counts✓
3To check the absolute standard accuracy of continuous variables
4When there are only two groups for comparison of means

Correct answer

When the data is in the form of frequencies or categorical counts

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