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Unformatted text preview: i y-bar) 2- (b + b 1 x i b b 1 x-bar) 2 )] = [b 1 (x i x-bar) 2 ]/[sqrt(b 1 2 )* (x i x-bar) 2 (x i x-bar) 2 ] = b 1 /|b 1 | Fact 3 Correlation between slope and equation for rho o CAUTIONS Correlations never prove causal relations A linear regression line should only be used over the range of the x-values HOMEWORK o QUESTION 1 b prove your claim o QUESTION 4 c use the TI-89, copy the graphs, normal values on p.89 of text y-bar y i ybar y i i...
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This note was uploaded on 04/07/2008 for the course MATH 226 taught by Professor Daepp during the Fall '07 term at Bucknell.
- Fall '07