# Standard Deviation and Variance

Since the start of the Obama presidency, the average number of minutes playing golf each week is 160 minutes and the standard deviation is 20 minutes. The average number of minutes attending cabinet meeting per week is 6 minutes and the standard deviation is 15 minutes. What is more variable golf minutes or cabinet meeting minutes?

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It depends upon "more variable" means in the absolute sense of number of minutes or in the relative sense of fraction of the number of minutes. –  Ross Millikan Feb 11 '13 at 23:32

Try putting the comparison in a ratio: $\dfrac{\text{standard deviation in minutes}}{\text{average time of ____ in minutes}},\;$ in terms of golf, and then in terms of cabinet meetings.