Find a. the mean; b. the deviation from the mean for each data item; and c. the sum of the deviations in part (b) for the following group of data items. 57, 107, 82, 57, 132 a. The mean is 87 b. Complete the following table by entering the deviations for each data value 107 132 c. The sum of the deviations is 29.15