Card 66 / 104: The variance is a measure of dispersion of scores around some measure of central tendency. The variance is the standard deviation squared. A popular IQ test has a standard deviation (SD) of 15. A counselor would expect that if the mean IQ score is 100, then
A) the average score on the test would be 122
B) 95% of the people who take the test will score between 85 and 115
C) 99% of the people who take the test will score between 85 and 115
D) 68% of the people who take the test will score between 85 and 115.

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