Quiz9solns

# Quiz9solns - STA 3032 - Section 7661 - Fall 2011 - Quiz 9...

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Unformatted text preview: STA 3032 - Section 7661 - Fall 2011 - Quiz 9 Please write your name and UF ID number and answer all questions on the paper that is provided to you. Do not write on the quiz sheet. Anything you write on the quiz sheet will not be graded. Show all work. There are 3 questions total (one is on the back). You may find the following helpful: r = ∑ ( x i- ¯ x )( y i- ¯ y ) p ∑ ( x i- ¯ x ) 2 ∑ ( y i- ¯ y ) 2 = ∑ n i =1 x i y i- n ¯ x ¯ y p ∑ n i =1 x 2 i- n ¯ x 2 p ∑ n i =1 y 2 i- n ¯ y 2 t n- 2 = ˆ β i- β i s ˆ β i ˆ β 1 = ∑ ( x i- ¯ x )( y i- ¯ y ) ∑ ( x i- ¯ x ) 2 = ∑ n i =1 x i y i- n ¯ x ¯ y ∑ n i =1 x 2 i- n ¯ x 2 = r s y s x ˆ β = ¯ y- ˆ β 1 ¯ x ˆ y i = ˆ β + ˆ β 1 x i SSR = n X i =1 (ˆ y- ¯ y ) 2 SSE = n X i =1 ( y i- ˆ y i ) 2 SST = n X i =1 ( y i- ¯ y ) 2 = SSR + SSE r 2 = SSR SST s 2 = MSE = SSE n- p- 1 s ˆ β = s s 1 n + ¯ x 2 ∑ n i =1 ( x i- ¯ x ) 2 s ˆ β 1 = s p ∑ n i =1 ( x i- ¯ x ) 2 s ˆ y = s s 1 n + ( x- ¯ x...
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## This note was uploaded on 12/13/2011 for the course STA 3032 taught by Professor Kyung during the Fall '08 term at University of Florida.

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Quiz9solns - STA 3032 - Section 7661 - Fall 2011 - Quiz 9...

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