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Setting Up a Chi-Square Test for Homogeneity or Independence

AP Statistics· difficulty 2/5

For a chi-square test of independence, which condition must be checked using expected counts?

Conditions - Random sample - Independent observations - Large expected counts (?) - 10% condition

The large counts condition requires...

  • A

    Sample size n >= 30

  • B

    All counts >= 10

  • C

    All observed counts >= 5

  • D

    All expected counts >= 5

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Explanation

The large-counts condition for chi-square inference is that all expected counts are at least 5.

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