Question: 9.67. Alternative formulas for defining the correlation use terms similar to those in the equation for b: r = - ^)(>' - ^ 2(* -

9.67. Alternative formulas for defining the correlation use terms similar to those in the equation for b:

r =

- ^)(>' - ^

2(* - x)2 l[x(y - y)2 2

n - 1

/ ,f -\ X - X J y - y \

I ^ j'{

s y 1

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