1. Consider the four sets of scores:

1. 8, 8, 8, 8, 8
2. 6, 6, 8, 10, 10
3. 4, 6, 8, 10, 12
4. 1004, 1006, 1008, 1010, 1012

1. Upon inspection, which show(s) the least variability? The most variability?

1. For each set of scores, compute the mean; compute the variance and standard deviation directly from the deviation scores.

1. What do the results of 4-2 suggest about the relationship between central tendency and variability?