AP®︎ Statistics (pre-2026): Topic 6.3 Flashcards

Master key terms and definitions for Topic 6.3 of AP Statistics (pre-2026) – Justifying a Claim Based on a Confidence Interval for a 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This course has been archived.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

Confidence Interval Capture Meaning

Definition

A specific interval either contains the true population proportion or it does not.

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Confidence Interval Capture Meaning
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A specific interval either contains the true population proportion or it does not.

UNC-4.FUNC-4.F.1
Confidence Level in Repeated Sampling
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In many random samples of the same size, about C% of intervals capture the true proportion.

UNC-4.FUNC-4.F.3
Using a Confidence Interval to Evaluate a Claim About a Population Proportion
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If the claimed proportion is inside the interval, the claim is plausible; if outside, doubt it.

UNC-4.GUNC-4.G.1
Sample Size and Confidence Interval Width
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Larger samples produce narrower intervals; width is proportional to 1 divided by the square root of n.

UNC-4.HUNC-4.H.1
Confidence Level and Confidence Interval Width
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For the same sample data, higher confidence levels produce wider intervals.

UNC-4.HUNC-4.H.2
Margin of Error and Confidence Interval Width
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The interval's width equals twice the margin of error.

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Interpreting a Confidence Interval for a Population Proportion
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State that you are C% confident the interval contains the true population proportion in context.

UNC-4.FUNC-4.F.4