For a 2×2 table, χ² test of independence is equivalent to

Two-sample z test for two proportions (squared) z² (two-proportion) = χ² for 2×2 (same p-value).

Two-sample z test for two proportions (squared)

Setting Up a Chi-Square Test for Homogeneity or Independence

AP Statistics· difficulty 4/5

For a 2\times2 table, χ² test of independence is equivalent to

Explanation

z² (two-proportion) = χ² for 2\times2 (same p-value).

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