# Dot Plots

A **Dot Plot** is a graphical display of data using dots.

Imagine you just did a survey of your friends to find which kind of movie they liked best:

Table: Favorite Type of Movie |
||||

Comedy | Action | Romance | Drama | SciFi |
---|---|---|---|---|

4 | 5 | 6 | 1 | 4 |

On a dot plot it looks like this:

It is a really good way to show relative sizes: it is easy to see which types of movie are most liked, and which are least liked, at a glance. Very similar to a bar graph.

Here is another example:

### Example: Minutes To Eat Breakfast

A survey of "How long does it take you to eat breakfast?" had the following results:

Minutes: | 0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |

People: | 6 | 2 | 3 | 5 | 2 | 5 | 0 | 0 | 2 | 3 | 7 | 4 | 1 |

Which means that 6 people take 0 minutes to eat breakfast (they probably had no breakfast!), 2 people say they only spend 1 minute having breakfast, etc.

And here is the dot plot:

Another version of the dot plot has just one dot for each data point like this:

### Example: (continued)

This has the same data as above:

But notice that we need to have lines and numbers on the side so we can see what the dots mean.