For 10 observations if and | Statistics | JEE MAIN 2026

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JEE MAIN 2026

04-04-2026 S2

Question

For 10 observations $x_1, x_2, \ldots, x_{10}$, if $\sum_{i=1}^{10}\left(x_i+2\right)^2=180$ and $\sum_{i=1}^{10}\left(x_i-1\right)^2=90$, then their standard deviation is:

Select the correct option:

A

2

B

$\sqrt{3}$

C

$2 \sqrt{2}$

D

3

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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