(b) Consider the data for analysis includes the attribute age. The age values for the data tuples are given in nondecreasing order 13, 15, 16, 16, 19, 20, 20, 21, 22,22,25, 25, 25, 25, 25, 30, 33, 33, 35, 35, 35, 35, 36, 40, 45, 46, 52, 70. Find I. the mean deviation. II. skewness (comment on data skewness). III. coefficient of variation of age