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Figure 2.7
Or they may be more spread out away from it, like this:
Figure 2.8
One simple measure of dispersion is to find the largest (the maximum) and the smallest
(the minimum) observed values of the variable and to compute therange of the variable as the
maximum observed score minus the minimum observed score. You can check that the range of
the height variable in Figure 2.5 "Height Distribution" is 72 – 62 = 10. The standard deviation,
symbolized as s, is the most commonly used measure of dispersion. Distributions with a larger