The variance of the data 2, 4, 6, 8, 10 is:

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none of these

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Solution

The correct option is C 8
$¯ x = 6, \sum (x - ¯ x)^{2} = 40 ∴ v a r i a n c e = σ^{2} = \frac{40}{5} = 8$

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