Question

if the sum of 15 observations is 420. find the mean

Answer 1

420/15= 28...
.....
...

Answer 2

As we know that mean = sum of all observations/ number of observations.
So, here according to the question, sum of all observations = 420. And number of observations are 15.
So, using the above informations, we get :
mean = 420/15
= 28.


Therefore, the correct answer is 28.

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