For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation. 9, - 9, 4, - 7,2 0 (a) Find the mean. M = (Round to one decimal place as needed.) (b) Find the median. Median = (Round to one decimal place as needed.) (c) Find the sum of squared deviations. SS = (Round to two decimal places as needed.) (d) Find the variance. Variance = (Round to two decimal places as needed.) (e) Find the standard deviation.M= | (Round to one decimal place as needed.) (b) Find the median. Median = Round to one decimal place as needed.) (c) Find the sum of squared deviations. SS = Round to two decimal places as needed.) (d) Find the variance. Variance = 'Round to two decimal places as needed.) (e) Find the standard deviation. SD = Round to three decimal places as needed.)