Question

What is the arithmetic mean of three observations with values of 8, 1 and 6?

Answer 1

Solution

Given observations, xi: 

                                        8, 1, 6

Simple Arithmetic Mean: 

x̅=1/n∑xi

Substitute values of observations,  xi=8,1,6 in the equation and add:

x̅=1/n(8+1+6)

Simplify by substituting n=3

x̅=1/3(15)

x̅=5

So, arithmetic mean of three observations with values of 8, 1 and 6                                                  = 5

Arithmetic mean of the observations = 5