Question

what is this please tell in detail

Answer 1

It is arithmetic mean !! For example :-

There are five number like 1 , 2 , 3 , 4 , 5 !

So the arithmetic mean will the sum of all numbers divided by the total number of the taken numbers .. I.e .., we have taken 5 numbers !!

So .. A.m will be 1+2+3+4+5 / 5 = 15 / 5 ====>> the arithmetic mean for the taken numbers is 3 !!!

Answer 2

This is formula for finding mean.....