1.

The mean of 10 observations is 15. If one observation 15 is added, then the new mean is(a) 16 (b) 11 (c) 10 (d) 15

Answer» The mean of 10 observations is 15. If one observation 15 is added, then the new mean is



(a) 16 (b) 11 (c) 10 (d) 15


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