Find the mad (mean absolute deviation) 79%, 85%, 90%

The mean absolute deviation is the mean of the absolute values of the differences between the given numbers and their mean. The mean is

... (79+85+90)%/3 = 84 2/3%

so the deviations are

... -5 2/3%, +1/3%, 5 1/3%

and the mean of their absolute values is

... (5 2/3 + 1/3 + 5 1/3)%/3 = 3 7/9%

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I find it convenient to let a calculator handle the tedious math.

29. because you will divide each number of months by 12 to find the number of years. which would mean, 5, 12.5, 16, 45, 50, 72.5. which is crazy. anyhow, i think you find the median in the middle. and yea hope your test goes good

B. 2 1/2 feet. multiply 2.5 inches by 12 to get thirty inches then divide by 12 to get 2.5 feet