AP
College Board
Statistics
QP-2009-Statistics-FRQ-Form B · Question 1
Question (excerpt):
-3- 1 1 i i x y x x y y r n s s Ê ˆ Ê ˆ  Á ˜ Á ˜ Ë ¯ Ë ¯ - - = - 1 y x s b r s = ( ) ( ) 2 2 1 ˆ 2 i i b i y y n s x x   - - = - 2009 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) -4- (II) Probab…
-3- 1 1 i i x y x x y y r n s s Ê ˆ Ê ˆ  Á ˜ Á ˜ Ë ¯ Ë ¯ - - = - 1 y x s b r s = ( ) ( ) 2 2 1 ˆ 2 i i b i y y n s x x   - - = - 2009 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B) -4- (II) Probab…
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