mean of 15 observations is 23.if each observation is multiplied by 2,find new mean
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Answered by
10
New mean is 46.if each observation is added, subtracted, multiplied and divided tha same number then new mean also follow same process. So 23x2=46
Answered by
24
mean of 15 observations is 23
so total observations
=15×23=345
if each observation multiplied by 2
sum become double
I.e.
345×2=690
new mean
690÷15=46
so total observations
=15×23=345
if each observation multiplied by 2
sum become double
I.e.
345×2=690
new mean
690÷15=46
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