formula

# formula - x x= Formula Sheet: Anderson, Sweeny, and...

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Formula Sheet: Anderson, Sweeny, and Williams 9 th Edition x x n i = (3.1) µ = x N i ( 3 . 2 ) IQR Q Q =− 31 (3.3) σ 2 2 = x N i b g (3.4) s xx n i 2 2 1 = b g (3.5) ss = 2 ( 3 . 6 ) σσ = 2 (3.7) standard deviation 100 % Mean  ×   (3.8) z s i i = (3.9) s yy n xy ii = −− bg 1 ( 3 . 1 0 ) () ixiy xy xy N µµ = (3.11) r s xy xy = ( 3 . 1 2 ) xy xy ρ = (3.13) x wx w i = ( 3 . 1 5 ) x fM n = (3.16) s fM x n 2 2 1 = b g ( 3 . 1 7 ) = N (3.18) 2 2 N = ( 3 . 1 9 ) If Y ab X =+ , then yx Yx b = , or if a sample, Ya b X sb s = (formula given in class) ! !! N n N N C n nNn == (4.1) ! ! ! N n N N Pn n Nn (4.2) PA c c h 1 (4.5) PA B PA PB PA B ∪= + b g b g b g b g (4.6) PAB PB c h b g = (4.7) PB A c h b g = (4.8) PBPAB ∩= b g b g c h (4.11) PAPBA b g b g c h ( 4 . 1 2 ) PAPB b g b g b g (4.13) PA PBA i nn ch ch bg = ++ + 112 2 " ( 4 . 1 9 ) fx n b g = 1 ( 5 . 3 ) Ex x f x b g b g (5.4) Var x x f x b g b g b g σµ 2 2 (5.5) n x n xn x F H G I K J = ! b g (5.6)

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fx n x pp x nx bg b g = F H G I K J 1 (5.8) Ex np b g == µ (5.9) Var x np p b g σ 2 1 (5.10) e x x b g = ! ( 5 . 1 1 ) () 0 rN r xnx f xx r N n    =≤ (5.12) r n N ( 5 . 1 3 ) 2 1 1 rr N n Var x n Nn N      
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## This note was uploaded on 03/01/2012 for the course ECON 371 taught by Professor Staff during the Spring '08 term at UVA.

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formula - x x= Formula Sheet: Anderson, Sweeny, and...

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