The median of the following set of numbers (12, 4, 13, 20, 4, 10, 14) is:
a. 4.
b. 11.
c. 12.
d. 17.
ANS: C
The median is the score at the exact center of the frequency distribution after scores are placed in rank order. In the example, the rank order of scores is (4, 4, 10, 12, 13, 14, 20). The score at the exact center of the distribution, then, is 12.
Four occurs most often in the list and is therefore the mode.
Eleven is the mean of the distribution. The median is the score at the exact center of the frequency distribution after scores are placed in rank order.
Seventeen is an incorrect answer. The median is the score at the exact center of the frequency distribution after scores are placed in rank order
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