## Mean:

$$\text{Mean}\;=\;\frac{\text{Sum of data}}{\text{Numbers Values}}$$

## Mode:

The mode is the most common number in the set.For example a set of numbers is:

$$12,33,45,23,33,12,45,33,14,8,4$$

$$\text{Mode}\;=\;33$$

## Median:

The Median is the middle number in which number of the set:For example a set of numbers is:

$$13,14,15,16,17,18,19,20,21$$

The Median is 17

Note:If you have even numbers of the set like that:

$$13,14,15,16,17,18,19,20,21,22$$

$$\text{Median}\;=\;\frac{17 + 18}{2}$$

$$\text{Median}\;=\;17.5$$