**The range is the difference between the least and greatest numbers in the set.**

**Example:** Consider the following set: 118, 154, 196, 211, 253.

The least number in the set is 118 and the greatest is 253. The range is the difference between these two numbers: 253 - 118 = 135. So, 135 is the range.

**Finding mean, median, mode and range from a chart:**

A chart is something we use to organize and see numbers better.

Here's a chart that shows 4 children and how many siblings they have:

Child |
Siblings |

Abby |
1 |

Bob |
3 |

Caitlyn |
2 |

Dan |
2 |

**Mean:** Adding all the siblings and divide by the amount of kids.

1 + 3 + 2 + 2 = 8

The, 8 ÷ 4 = 2

So, 2 is the mean.

**Median:** Put the siblings in order from low to high and then find the middle number.

1,2,2,3

Since there are two middle numbers, we have to find their mean:

2 + 2= 4

4 ÷ 2= 2

So, 2 is the median.

**Mode:** Finding the number of siblings that comes up most often.

1, 3, **2, 2** = 2

So, 2 is the mode.

**Range:** Finding the difference between the least and greatest number of siblings in the set.

3 - 1 = 2

Hence, 2 is the range.