Varience of data 1001, 1003, 1006, 1007, 1009, 1010 is -

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13.Statistics

medium

The varience of data $1001, 1003, 1006, 1007, 1009, 1010$ is -

A

$10$

B

$15$

C

$20$

D

$50$

Solution

Varience remains unchanged on subtraction

varience $=\frac{1^{2}+3^{2}+6^{2}+7^{2}+9^{2}+10^{2}}{6}-\left(\frac{1+3+6+7+9+10}{6}\right)^{2}$

$=10$

Standard 11

Mathematics

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