Find the variance of 101, 102, 100, 100, 110, 109, 109, 108, 109

1 answer:

6 0

101, 102, 100, 100, 110, 109, 109 ,108, 109 average to 105.3

subtracting the mean from each number yields the below-

-4,-3,-5,-5,5,4,4,3,4

Squaring each number gives-

16,9,25,25,16,16,9,16

The average of these numbers is 12.89 to two decimal places, so your variance is 12.89

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