Introducing Statistics: Are My Results Unexpected?
Study Guide Overview
This AP Statistics study guide covers chi-square tests, focusing on variation between observed and expected data. It explains p-values, the impact of sample size on standard deviation and power, and the Law of Large Numbers. It includes practice multiple-choice and free-response questions with solutions covering hypothesis testing, calculating expected values, the chi-square statistic, degrees of freedom, and interpreting results.
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Question 1 of 11
🎉 In a study, you expect 50 individuals to prefer Brand A, but you observe 60. What does this difference represent?
Random sampling error
Observed variation
Statistical bias
Population parameter