The data set is: 2, 3, 6, 7, 12. A measure of dispersion is calculated, and it is about 3.5.

The data set is: 2, 3, 6, 7, 12. A measure of dispersion is calculated, and it is about 3.5. What is this measure of dispersion?
A)The difference score
B)The variance
C)The range
D)The standard deviation

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