Five mark exercise problem II — task. Mathematics State Board, Class 10.

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Find the variance and standard deviation of the wages of

$9$ workers given below:

$₹ 310$ ,

$₹ 290$ ,

$₹ 320$ ,

$₹ 280$ ,

$₹ 300$ ,

$₹ 290$ ,

$₹ 320$ ,

$₹ 310$ ,

$₹ 280$ .

Answer:

Variance

$=$

Standard deviation

$=$

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