Basic Statistics Statistics Formula Sheet. Deviation s x r 1 n 1 x x i x 2 6 z score z x 7 correlation r 1 n 1 xn i 1 x i x s x y i y s y 8 linear regression line y a bx 9 b r s y s x a y bx 10 s v u u t 1 n 2 xn i 1. N x 2 n pm.
The sample mean x x x n. Variance statistics formula large sigma 2 frac sum x bar x 2 n where x items given barx mean n total number of items. Freeman co 5thedition.
Limits for unusual data below.
N x 2 n pm. Deviation s x r 1 n 1 x x i x 2 6 z score z x 7 correlation r 1 n 1 xn i 1 x i x s x y i y s y 8 linear regression line y a bx 9 b r s y s x a y bx 10 s v u u t 1 n 2 xn i 1. 2 2 2 2. 1 the population mean for a discrete random variable x e x x all x xp x x.
