1.

If the mean of 9, 10, 15, x, 6, 8 and 12 is 11. The median of the observations is(a) 4 (b) 10 (c) 13 (d) 5

Answer» If the mean of 9, 10, 15, x, 6, 8 and 12 is 11. The median of the observations is



(a) 4 (b) 10 (c) 13 (d) 5


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