ARITHMETIC MEAN FORMULA
Sum of all of the numbers of a group, when divided by the number of items in that list is known as the Arithmetic Mean or Mean of the group. For example, the mean of the numbers 5, 7, 9 is 4 since 5+7+9 = 21 and 21 divided by 3 [there are three numbers] is 7.
Where, N is total number of observations.
Please note that Average is different than an Arithmetic Mean.
https://go.oclaserver.com/afu.php?zoneid=1927068SOLVED EXAMPLES
Question 1: The marks obtained by 6 students in a class test are 20, 22, 24, 26, 28, 30. Find the mean ?
= 25
Solution:
=
= 25
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