If the mean of 4 observations is 20, when a constant C is added to each observation, the mean becomes 22. The value of C is :

If the mean of 4 observations is 20, when a constant C is added to e

1.	If the mean of 4 observations is 20, when a constant C is added to each observation, the mean becomes 22. The value of C is :
A.	6
B.	2
C.	2
D.	4
Answer» D. 4

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If the mean of 4 observations is 20, when a constant C is added to each observation, the mean becomes 22. The value of C is :

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