For the following sample of n = 7 scores:
8 6 = 2 6 3 5
a. Sketch a histogram showing the sample distribution.
b. Locate the value of the sample mean in your sketch, and make an estimate of the standard
deviation (as done in Example 4.5).
c. Compute SS, variance, and standard deviation for the sample. (How well does your estimate compare with the actual value of s?)