Compute the mean absolute deviation, the variance, and the standard deviation for these figures.

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Compute the mean absolute deviation, the variance, and the standard deviation for these figures.




The effectiveness of district attorneys can be measured by several variables, including the number of convictions per month, the number of cases handled per month, and the total number of years of conviction per month. A researcher uses a sample of five district attorneys in a city and determines the total number of years of conviction that each attorney won against defendants during the past month, as reported in the first column in the following tabulations. Compute the mean absolute deviation, the variance, and the standard deviation for these figures. 



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