For the following 3 samples, calculate the mean, median and determine if they are skewed.For the 3 samples, calculate the range, standard deviation, variance and the coefficient of variation.

a) 23 31 20 23 18 26 20

b) 20 59 57 36 39 45 59 59 29 60

c) 1 5 3 3 15

Calculate the mode, median and mean for each of the following samples of raw data:

1. a)13 8 7 10 12 7
2. b)11 14 18 14 21 17 13 21 25 19 17 13 28 13 17 18
3. c)80 115 82 102 94 108 90 88 91 89 95 105