The mean of 10 observation is 15.7.if a new observation 19 is included, the new mean is ........ .
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sum of 10 numbers= 15.7×10= 157.
If new number is being included then new sum= 157+19 =176.
total number of observations= 11.
New mean=sum of all observations/number of observations.
= 176÷11
=16.
If new number is being included then new sum= 157+19 =176.
total number of observations= 11.
New mean=sum of all observations/number of observations.
= 176÷11
=16.
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