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Question

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

A
1
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B
0.0
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C
12
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D
-4
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Solution

The correct option is B 0.0
Given data :- 14, 7, 32, 15, 18, 23, 38

Mean of the data = 14+7+32+15+18+23+387 = 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

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