5. For the following set of scores, compute the range, the unbiased and the biased standard deviations, and the variance. Use SPSS for this question but there may be some part of it you will have to do by hand.

31, 42, 35, 55, 54, 34, 25, 44, 35

6. The variance for a set of scores is 25. What is the standard deviation, and what is the range?

7. Use SPSS to find the range, the standard deviation, and the variance of each of the following sets of scores:

a. 3, 5, 7, 9

b. 0.2, 0.4, 0.6, 0.8

c. 3.5, 6.2, 9.3, 4.1, 5.5, 7.9