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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Statistics

NDA 2014 · Mathematics · Statistics

The variance of 20 observations is 5. If each observation is...

The variance of 20 observations is 5. If each observation is multiplied by 2 , then what is the new variance of the resulting observations?

Options

  1. A5
  2. B10
  3. C20
  4. D40

Correct answer

C. 20

Step-by-step solution

The correct answer is option (C)
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