1.

If for a sample of size 60, we have the following information ∑xi2=18000 and ∑xi=960, then the variance is(a) 6.63 (b) 16 (c) 22 (d) 44

Answer» If for a sample of size 60, we have the following information xi2=18000 and xi=960, then the variance is



(a) 6.63 (b) 16 (c) 22 (d) 44


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