• The twelve change scores are as follows: 3; 8; -1; 2; 0; 5; -3; 1; -1; 6; 5; -2

1. Begin by listing the change scores in order.
2. What is the average change score?
3. What is the standard deviation for this population?
4. What is the median change score?
5. Find the change score that is 2.2 standard deviations below the mean.