Which is the correct form of the relative frequency formula? I could find the answer on google so may a jiskha math expert might know.

Question

a) RF=1/(sigma root(2pi))e^-(1/2 (x-u)^2 /sigma^2) or b) RF=1/(sigma root(2pi))e-(1/2 ((x-u)^2 )/sigma^2)

Answer 1

b) RF=1/(sigma root(2pi))e-(1/2 ((x-u)^2 )/sigma^2) is the correct form of the relative frequency formula.