K 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. 132, 136, 143, 146, 148 a. The mean is (Simplify your answer.) b. Complete the following table by entering the deviations for each data value. Data Item Deviation 132 (Simplify your answers.) 136 143 146 148 c. The sum of the deviations is (Simplify your answer.)