Question

A distribution has a standard deviation of `sigma=8`. How do you find the z-score below the mean by 8 points?

Answer 1

-1

Explanation:

Formula for Z is `Z = ((x - bar x))/("(standard deviation)")`

In this case, `x - bar x` is given as -8 (below the mean), and the standard deviation is 8, therefore

`Z = (-8)/(8)` = -1.