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Setting Up a Chi-Square Test for Homogeneity or Independence

AP Statistics· difficulty 4/5

Two categorical variables are independent if

  • A

    Conditional distributions of Y given each X are equal

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  • B

    All cell counts are equal

  • C

    Sample size is large

  • D

    Row and column totals match

Explanation

Independence ⇔ conditional distributions don't depend on the conditioning variable.

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