Mean

Question

Five numbers are given: (5, 10, 15, 5, 15). Now, what would be the sum of deviations of individual data points from their mean?

A) 10

B)25

C) 50

D) 0

E) None of the above

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Pragya Rani 55 years 2 Answers 750 views Contributor 0

Answers ( 2 )

  1. Dhruv2301
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    D)0
    As the sum of deviations about the mean value is ALWAYS zero.

  2. shankar
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    Mean = (5+10+15+5+15)/5
    Mean = 10
    Total deviation from mean = (5-10)+(10-10)+(15-10)+(5-10)+(15-10)
    = -5+0+5-5+5
    = 0
    Sum of deviation from Mean for individual points = 0

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