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|
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:
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:
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.