This worksheet is about the three different types of **averages **and the **range **of a set of numbers.

Averages

**Mean**

Sum of the values divided by the number of values there are.

**Median**

The middle value when you place the values in ascending order.

If there are two middle values, find the mean of these two middle values.

**Mode**

The most frequently occurring value or the most popular value.

If there is no number that appears more than once, there is no mode.

If this happens, write **none** for the mode

Range

This is not an average.It is a measure of how spread out the data is.

It is the difference between the biggest number and the smallest value.

The highest value **minus** the lowest value.