MHT-CET

Statistics question bank (Mathematics)

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Q1.

The mean and variance of seven observations are 8 and 16 respectively. If 5 of the observations are $2,4,10,12,14$, then the square root of product of remaining two observations is

(A)
$4 \sqrt{3}$
(B)
$3 \sqrt{3}$
(C)
$2 \sqrt{3}$
(D)
$5 \sqrt{3}$
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Q2.

The variance of first 50 even natural numbers is

(A)
833
(B)
473
(C)
$\frac{437}{4}$
(D)
$\frac{833}{4}$
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