Which of the following value must always be positive in the principle – McqOptions

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1.	Which of the following value must always be positive in the principle of least squares?
A.	(N-(∑V/n))2
B.	(N*(∑V/n))2
C.	(N+(∑V/n))2
D.	(N-(∑V/n))0
Answer» B. (N*(∑V/n))2

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