Q. 54.3( 3 Votes )

The mean of 12 nu

Answer :

Given that, mean of 12 numbers = 48

Mean can be given by



Where, x = Sum of all observations


& n = Total number of observations


Here, Mean = 48 and n = 12.


So,



x = 48 × 12


x = 576


We have sum of all observations = 576


If 4 is multiplied by each of the 12 numbers, then the new sum of all observations = 576 × 4


New sum of all observations = 2304


Now, we have fresh data: x’ = 2304, n = 12



New mean = 192


Thus, new mean of the observation is 192.


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