The mean of a sample of 10 scores is 100, and the standard deviation is 5. For the following raw scores, compute the z score: (a) 101 (b) 112 (c) 97 For the following z scores, work backward to...

The mean of a sample of 10 scores is 100, and the standard deviation is 5. For the following raw scores, compute the z score:

(a) 101

(b) 112

(c) 97

For the following z scores, work backward to compute the corresponding raw score:

(a) –0.5

(b) 1.1

(c) 2.12

Why would you want to work with z scores rather than raw scores? What is the primary purpose of standard scores?