Transcription of AP Statistics 2019 Free-Response Questions
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AP Statistics 2019 Free-Response Questions
2019. AP Statistics . Free-Response Questions 2019 The College Board. College Board, Advanced Placement, AP, AP Central, and the acorn logo are registered trademarks of the College Board. Visit the College Board on the web: AP Central is the official online home for the AP Program: 2019 AP Statistics Free-Response Questions . Formulas begin on page 3. Questions begin on page 6. Tables begin on page 14. -2- 2019 AP Statistics Free-Response Questions . Formulas (I) Descriptive Statistics xi x n 1 2. sx xi x n 1. n1 1 s21 n2 1 s 22. sp n1 1 n2 1. y b0 b1 x xi x yi y b1. 2. xi x b0 y b1 x 1 x x yi y . r i s . n 1 sx y . sy b1 r sx 2. yi y i sb n 2. 1 2. xi x -3- 2019 AP Statistics Free-Response Questions . (II) Probability P ( A B) P ( A) P ( B ) P ( A B ). P ( A B). P ( A B). P ( B). E( X ) x xi pi 2. Var( X ) s 2x xi x pi If X has a binomial distribution with parameters n and p, then: n k n k P( X k) k p (1 p).
a computer program performs the following steps. • Take a random sample, with replacement, of size 50 from the original sample. • Calculate and record the median of the sample. • Repeat the process to obtain a total of 15,000 medians. 2019 AP ® STATISTICS FREE-RESPONSE QUESTIONS . STATISTICS . GO ON TO THE NEXT PAGE. -12-
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