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AP Statistics: Exam Prep & Study Path

Explore variability, design a fair investigation, and explain what a statistical result actually says.

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A statistical investigation starts with a question about a group and anticipates variability among its members. The observational unit is the person or object measured; a variable records one characteristic of that unit.

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Original diagram: A normal curve is a model, not a verdict. VIDEO → ARTICLE
StatQuest with Josh Starmer · 9 min read

A normal curve is a model, not a verdict.

Use location, spread and area to tell a careful statistical story.

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Original diagram: What confidence actually covers. VIDEO → ARTICLE
StatQuest with Josh Starmer · 10 min read

What confidence actually covers.

Build an interval, name the parameter, and avoid the probability trap.

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Original diagram: Read the residual before trusting the line. VIDEO → ARTICLE
StatQuest with Josh Starmer · 11 min read

Read the residual before trusting the line.

Compare a prediction with an observation, then decide what the model can support.

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Original diagram: The bins are part of the argument. VIDEO → ARTICLE
StatQuest with Josh Starmer · 11 min read

The bins are part of the argument.

Read intervals honestly, compare groups fairly, and expose what a histogram hides.

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Original diagram: More means are not a bigger sample. VIDEO → ARTICLE
StatQuest with Josh Starmer · 12 min read

More means are not a bigger sample.

Separate individual observations, sampling distributions and simulation precision.

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Original diagram: A p-value is a conditional argument. VIDEO → ARTICLE
Khan Academy · 12 min read

A p-value is a conditional argument.

Define the alternative, count the right tail, and write a conclusion without claiming certainty.

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A focused foundation pilot. 400 original question variants across 96 families. This is a starting set, not complete AP Statistics coverage. Explore the coverage map and gaps. Difficulty labels are uncalibrated editorial estimates; independent educator review is pending.