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Let x(1), x(2), ……., x(n) be n observati...

Let `x_(1), x_(2), ……., x_(n)` be n observations such that `sum x_(i)^(2) = 400 and sum x_(i) = 80`. Then a possible value of n among the following is :

A

18

B

15

C

12

D

9

Text Solution

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The correct Answer is:
A
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