X = weight within 2.5 pounds and y = number with weight x. All weights are given within an accuracy of 2.5 pounds. data = {{42, 20}, {47, 146), {52, 553}, (57, 979), (62, 1084), (67, 807), 172, 468}, {77, 180}, {82, 103), (87, 41), (92, 25), (97, 21), (102, 11}, (107, 5), {112, 5}, {117, 3}} . Take this information and calculate the expected value and the variance of this data set. . Throw in a frequency plot and a plot of the approximate cumulative distribution function of this data collection