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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Statistics

NDA 2014 · Mathematics · Statistics

The variance of numbers x_1, x_2, x_3, x_n is V. Consider the...

The variance of numbers x1,x2,x3,…xnx_1, x_2, x_3, \ldots x_n is V. Consider the following statements: 1. If every xix_i is increased by 2 , the variance of the new set of numbers is V. 2. If the numbers xix_i is squared, the variance of the new set is V2\mathrm{V}^2. Which of the following statements is/are correct?

Options

  1. A1 only
  2. B2 only
  3. CBoth 1 and 2
  4. DNeither 1 nor 2

Correct answer

A. 1 only

Step-by-step solution

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