mean of 15 observation is 23 if each observation is multiplied by 2 find new mean
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Answer :-
The new mean is 43.
Solution :-
Mean of 15 observations = 23
Number of observations = 15
We know that
Sum of observations = Mean * Number of observations
Sum of observations = 23 * 15
= 345
Given each observation is multiplied by 2
So multiply sum of observation by 2
Sum of observations when each observation is multiplied by 2 = Sum of observation * 2
= 345 * 2
= 690
We know that
Mean = Sum of observations/Number of observations
So, New mean = 690/15
= 43
Therefore the new mean is 43.
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