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)
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.