formulas2_2010

# formulas2_2010 - Statistics 101 Formulas – Exam 2 t= z=...

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Unformatted text preview: Statistics 101: Formulas – Exam 2 t= z= √ se = s/ n y − µ0 , se π − π0 ˆ σπ ˆ π0 (1 − π0 ) n σπ = se0 = ˆ Binomial P (x) = n! π x (1 − π )n−x , x!(n − x)! (ˆ2 − π1 ) ± z (se), se = π ˆ t = (y 2 − y 1 )/se, (y 2 − y 1 ) ± t(se), χ2 = x = 0, 1, 2, . . . , n. π1 (1 − π1 ) π2 (1 − π2 ) ˆ ˆ ˆ ˆ + n1 n2 se = (se1 )2 + (se2 )2 = s2 s2 1 +2 n1 n2 (f0 − fe )2 , df = (r − 1)(c − 1), fe = (row total)(col. total)/n fe standardized residual = fo − fe fe (1 − row prop.)(1 − col. prop.) Linear regression model E (y ) = α + βx y = a + bx ˆ r = b(sx /sy ) r 2 = (T SS − SSE )/T SS b= s= b ± t(se), t= (x − x)(y − y ) ¯ ¯ , 2 (x − x ) ¯ S SE/(n − 2) = Root MSE b = se r 1−r 2 n −2 (df = n − 2), 1 a = y − bx. ¯ ¯ se = s Σ(x − x)2 = sx √ s n−1 ...
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## This note was uploaded on 07/14/2011 for the course STA 101 taught by Professor Alan during the Fall '10 term at University of Florida.

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