Question

Sum of deviations of all the observations of the data 14, 7, 32, 15, 18, 23, 38 from their mean is .

• A. 1
• B. 0.0
• C. 12
• D. -4

Answer 1

The correct option is B 0.0

Given data :- 14, 7, 32, 15, 18, 23, 38

Mean of the data = $\frac{14+7+32+15+18+23+38}{7}$ = 21

Sum of deviations from their mean = (21 - 14) + (21 - 7) + (21 - 32) + (21 - 15) + (21 - 18) + (21 - 23) + (21-38) = 7 + 14 - 11 + 6 + 3 -2-17 = 0