If average of 20 observations x1, x2, . . . . . x20 is y, then the average of x1 - 101, x2 - 101, x3 - 101, . . . . . x20 - 101 is :

If average of 20 observations x1, x2, . . . . . x20 is y, then the ave

1.	If average of 20 observations x1, x2, . . . . . x20 is y, then the average of x1 - 101, x2 - 101, x3 - 101, . . . . . x20 - 101 is :
A.	- 20
B.	- 101
C.	0y
D.	01y
Answer» C. 0y

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If average of 20 observations x1, x2, . . . . . x20 is y, then the average of x1 - 101, x2 - 101, x3 - 101, . . . . . x20 - 101 is :

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