Consider 10 observations x 1 , x 2 , …, x 10 such that 10 i i 1 (x ) = − α ∑ = 2 and 10 2 i i 1 (x ) = − β ∑ = 40, where α , β are positive integers. Let the mean and the variance of the observations be 6 5 and 84 25 respectively. Then β α is equal to :

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Consider 10 observations x 1 , x 2 , …, x 10 such that 10 i i 1 (x ) = − α ∑ = 2 and 10 2 i i 1 (x ) = − β ∑ = 40, where α , β are positive integers. Let the mean and the variance of the observations be 6 5 and 84 25 respectively. Then β α is equal to :

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