AP®︎ Statistics (pre-2026): Topic 6.10 Flashcards

Master key terms and definitions for Topic 6.10 of AP Statistics (pre-2026) – Setting Up a Test for the Difference of Two Population Proportion to help you prep for quizzes and the AP exam.

This course has been archived. The College Board updated AP Statistics for the 2026–27 school year, and the units and topics changed.
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Term

Two-Sample Z-Test for a Difference Between Two Population Proportions

Definition

A significance test comparing two population proportions using a z statistic.

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Two-Sample Z-Test for a Difference Between Two Population Proportions
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A significance test comparing two population proportions using a z statistic.

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Parameters p1 and p2
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The true population proportions for the two groups being compared.

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Pooled Proportion / Combined Proportion
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The combined sample proportion, p̂c = (x1 + x2)/(n1 + n2), used under the null hypothesis.

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Hypotheses for a Difference in Two Population Proportions
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States no difference in population proportions versus a one-sided or two-sided difference.

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Large Counts Condition for a Two-Proportion Z-Test
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Uses the pooled proportion to verify all expected counts in both samples are at least 5 or 10.

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Random and Independence Conditions for Two-Proportion Tests
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Requires random samples or random assignment, independent groups, and each sample under 10% of its population.

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