If xm represents the mean of n observations x1, x2, x3, …….xn, the – McqOptions

MCQOPTIONS

1.	If xm represents the mean of n observations x1, x2, x3, …….xn, then the value of ∑(xi-xm)?
A.	-1
B.	1
C.	0
D.	n
Answer» D. n

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