1.

The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group,then the mean of of the remaining students is(a) 20 kg (b) 21 kg (c) 19 kg (d) 18 kg

Answer» The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group,

then the mean of of the remaining students is



(a) 20 kg (b) 21 kg (c) 19 kg (d) 18 kg


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