# Arithmetic Mean

Definition of Arithmetic Mean (Average):

Arithmetic mean is commonly known as average. The average of a given set of numbers is called the arithmetic mean, or simply, the mean of the given numbers.

Thus, the arithmetic mean of a group of observations is defined as …

Mean = (Sum of observations)/(Number of observations)

x is the symbol of the arithmetic mean.

Thus, the mean of n observation x1, x2, . . ., xn, is given by

Where the symbol ∑ called sigma, stands for summation, and we write,

To learn how to solved problems using the formula for arithmetic mean, follow the below links to observe the explanations using various examples.

Statistics

Word Problems on Arithmetic Mean

Properties of Arithmetic Mean

Problems Based on Average

Properties Questions on Arithmetic Mean