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The variance of 25 observations is 4. If 2 is added to each observation, then the new variance of the resulting observations is

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The variance of 25 observations is 4. If 2 is added to each observation, then the new variance of the resulting observations is 

a. 2 

b. 4 

c. 6 

d. 8

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1 Answer

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Best answer

Correct option b. 4

Explanation:

Variance will not change by adding or subtracting a fixed value to all the elements. 

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