(a) Use a computer program to write a code (choose any language)to find the mean, median, mode ,variance and standard deviation.
The yard rushed by forty quarterbacks in one game
99 89 86 64 55 44 42 43 35 32
29 29 28 28 27 24 22 21 19 18
16 15 15 14 12 12 12 10 9 9
9 9 6 4 4 3 1 1 1 0
(b)a teacher gives a 20-point test to 10 students. The scores are shown below. Write a code to find the percentile rank of a score of 12, 18, 15, 12, 6, 8, 2, 3, 5, 20, 10.