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Mean of 100 observations is 50 and standard deviation is 10. If 5 is added to each observation, then what will be the new mean and new standard deviation respectively?

Options

  1. A50,10
  2. B50,15
  3. C55,10
  4. D55,15

Correct answer

C. 55,10

Step-by-step solution

Given: n=100 x =50, =10 5 is added to each observation new mean =55 & standard deviation remains same.

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