Question #3074

x f
5 5
15 7
25 11
35 16
45 13
55 7
65 4
75 2
mean deviation,variance, standard deviation, coefficent of variance

Expert's answer

m = mean = sum(1:8; f/65 * x) = 36.077

MD = sum(1;8; f /65 * |x-m] ) = 13.6

s = Std deviation = sqrt( sum(1;8; f/65 * |x-m]^{2} )) = 17.198

Coefficent of variance = s/ |m| = 0.4767

MD = sum(1;8; f /65 * |x-m] ) = 13.6

s = Std deviation = sqrt( sum(1;8; f/65 * |x-m]

Coefficent of variance = s/ |m| = 0.4767

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