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NDA 2021
Exam
NDA
Year
2021
Subject
Mathematics
Chapter
Statistics

NDA 2021 · Mathematics · Statistics

What is the sum of deviations of the variate values 73 ,...

What is the sum of deviations of the variate values 73 , 85,92,105,12085,92,105,120 from their mean?

Options

  1. A−2-2
  2. B−1-1
  3. C00
  4. D55

Correct answer

C. 00

Step-by-step solution

 Mean =73+85+92+105+1205=95∴\text{ Mean }=\frac{73+85+92+105+120}{5}=95\therefore Sum of the deviation from the mean =(95−73)+(95−85)+(95−92)+(95−105)&=22+10+3−10−25=0\begin{aligned}& =(95-73)+(95-85)+(95-92)+(95-105) \& =22+10+3-10-25=0\end{aligned}
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