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If M is the mean of x1 , x2 , x3 , x4 , ...

If M is the mean of x1 , x2 , x3 , x4 , x5 and x6, prove that (x1 − M) + (x2 − M) + (x3 − M) + (x4 − M) + (x5 — M) + (x6 − M) = 0

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RD SHARMA ENGLISH-MEASURES OF CENTRAL TENDENCY-All Questions
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