# Arithmetic Mean

The arithmetic mean, or simply mean, is sum of all numbers in a collection divided by the number of numbers in that collection.

$A={\frac {1}{n}}\sum _{i=1}^{n}a_{i}={\frac {a_{1}+a_{2}+\cdots +a_{n}}{n}}$

## Deeper Knowledge on Arithmetic Mean

### Median

How to calculate the median of a collection of numbers

## Broader Topics Related to Arithmetic Mean

### Statistics

The analysis of numerical data