Psatnmsqt is a registered trademark of the college

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ege Board. PSAT/NMSQT is a registered trademark of the College Board and National Merit Scholarship Corporation. Permission to use copyrighted College Board materials may be requested online at: www.collegeboard.com/inquiry/cbpermit.html. Visit the College Board on the Web: www.collegeboard.com. AP Central is the official online home for the AP Program: apcentral.collegeboard.com. 2008 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) Formulas begin on page 3. Questions begin on page 6. Tables begin on page 13. -2- 2008 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) Formulas (I) Descriptive Statistics xi n x 1 sx xi x yi xi y b1 r x xi 1 2 1 x sx yi y sy sy sx yi sb y b1 x 1 n n2 1 b1 x b1 r 2 n2 1 s 2 2 n1 1 b0 b0 x n1 1 s2 1 sp ˆ y xi 1 n ˆ yi n 2 xi x 2 2 -3- 2008 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) (II) Probability P( A B) P ( A) P( A B) P ( A B) P ( B) P ( A B) μx E( X ) P ( B) xi pi s2 x Var( X ) xi μx 2 pi If X has a binomial distribution with parameters n and p , then: P( X μx sx μp ˆ nk p (1 k k) p )n k np np(1 p) p p(1 sp ˆ p) n If x is the mean of a random sample of size n from an infinite population with mean μ and standard deviation s , then: μx sx μ s n -4- 2008 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) (III) Inferential Statistics Standardized test statistic: statistic parameter standard deviation of statistic Confidence interval: statistic critical value standard deviation of statistic Single-Sample Standard Deviation of...
View Full Document

Ask a homework question - tutors are online