the mean of 11 number is 23 if 5 is added in every number find new mean
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the new mean will be 28
as the previous mean was 23
and the formula is sum of all observations/ no. of observations
acc. to the formula
sum/11=23
therefore sum = 253
as 5 is added to each no. this means that a total of 55 is added
therefore the new mean would be
11×23+55/11=28
as the previous mean was 23
and the formula is sum of all observations/ no. of observations
acc. to the formula
sum/11=23
therefore sum = 253
as 5 is added to each no. this means that a total of 55 is added
therefore the new mean would be
11×23+55/11=28
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