1. Given the data: Mean = 25 Standard Deviation = 3

What is the z-score if the raw score is 23? Use two decimal places.

2. Given the data: Mean = 25 Standard Deviation = 3

What is the raw score if the z-score is 1.25? Use two decimal places.

3. Given the data: Mean = 85 Raw score = 90

What is the standard deviation if the z score is 1. 50?Use two decimal places.

4. Find the median of the following data set.

11, 13, 15, 17, 19, 21, 22, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 51, 53, 55, 57, 59

5. Given the set of data:

1,1, 2, 2, 3, 3, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22

How many numbers are in the lower quartile?