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AP EAMCET201824 Apr 2018Morning ShiftMathematicsStatisticsActual

If the variance of 6,7,8,9,10,11 is ^2 , then the variance of 12,14,16,18,20,22 is

Options

  1. A2 ^2
  2. B4 ^2
  3. C100+2 ^2
  4. D100+4 ^2

Correct answer

B. 4 ^2

Step-by-step solution

Its a fundamental concept if each data is doubled then variance is 4 times. So, new variance =(2)^2 ^2=4 ^2

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