Question

uppose a normal distribution has a mean of 16 and a standard deviation of 4. A value of 26 is how many standard deviations away from the mean

Answer 1

2.5 s. d.

Explanation:

Use the formula for calculating z scores:

26 - 16

z = ------------- = 10/4 = 2.5

4

Here the value 26 is 2.5 standard deviations above the mean (16).