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

1 Answer
Jun 28, 2018

-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.