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JEE MATHEMATICS MCQ: STATISTICS

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Application +4 | -1

Let

{x_1},{x_2}, \ldots ..,{x_x}\;

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

View answer and explanation

Correct option: C

18

Option C (18) is correct because the condition for variance being non-negative leads to n >= 16, and 18 is the only option satisfying this.

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