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# Coefficient of Variation - Mean Score on the SAT

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The mean score on the SAT is $1509$ with a standard deviation of $312$. The mean ACT score is $21$ with a standard deviation of $4.7$.

Relative to its mean, which test has more variability in its scores?

A

The SAT, with a coefficient of variation of $438.65\%$.

B

The SAT, with a coefficient of variation of $20.68\%$.

C

The ACT, with a coefficient of variation of $22.38\%$.

D

The ACT, with a coefficient of variation of $446.81\%$.