Based on an examination given to a large class in which the maximum score is 100 points, assume that 20 grades taken at random from the entire set produced the results that follow: 43 49 56 61 65 68 70 70 74 74 74 76 79 83 84 87 88 92 96 100. Determine the
A. sample mean
B. sample mean-square
C. sample rms value
D. Sample variance
E. sample standard deviation
F. median
G. mode
H. range.