What is an arithmetic mean? The word arithmetic mean is very simple and as simple as finding out the average of the numbers provided. However, the arithmetic mean needs proper concentration on data. Let us consider different observations starting from x_{1}, x_{2 }up to x_{n }and thus A.M. can be found out by using the formula

A.M. = 1/n∑xi where the summation takes the limit from x=1 to x=n.

Simple frequency distribution is very important for you and thus it is determined in a simple way. It means the addition of the total value of observations divided by the total numbers.

In case of grouped frequency distribution the frequency and class mark multiplies with each other and then and the total number of the frequencies.

Thus, addition of product xy and total of x, which is known as n, divides to get the exact mean value.

It means ∑xy/ n where n is the value of addition of x.

**Links of Previous Main Topic:-**

- Introduction to statistics
- Frequency distribution of data
- Graphical representations of statistics
- Knowledge of central tendency or location

**Links of Next Statistics Topics:-**

- Definition of dispersion
- Moments
- Bivariate distribution
- Theorem of total probability addition theorem
- Random variable
- Binomial distribution
- What is sampling
- Estimation
- Statistical hypothesis and related terms
- Analysis of variance introduction
- Definition of stochastic process
- Introduction operations research
- Introduction and mathematical formulation in transportation problems
- Introduction and mathematical formulation
- Queuing theory introduction
- Inventory control introduction
- Simulation introduction
- Time calculations in network
- Introduction of game theory