How to Draw a Dot Plot
Dot plots are great for solving basic math problems from anything to advanced math problems. They are used to count data in the form of dots on a plots, which is where its name (Dot Plot) comes from. There are two ways to draw Dot Plot such as the Basic and 'One-Dot' Dot Plot. If you're looking to learn how to draw both of these versions, then what better place than the land of the wikiHowians?
Basic Dot Plot
Draw the actual plot on paper or in drawing software on your computer.To begin your basic Dot Plot, draw a line long enough to hold all of your data.
Label the plot.Labeling your plot will need to be done on the bottom, under the line you drew. Choosing whether to useNumbersorWordswill depend on what your data consists of.
- Numbers should be used when your problem looks like this: "How long does it take you to eat breakfast?"
- Words should be used when your problem looks like this: "We asked Jack, Anna, and Flickety to guess how many wikiHowian friends they have. Anna said100, Jack said101, and Flickety said102. So instead of numbers at the bottom, you'd use the names of the wikiHow Admins listed in the problem instead.
Draw the data out onto the plot.After labeling and or numbering your Dot Plot, you now must place the data onto the table.
- For Example: If your dot plot problem says something such as this:"Krystle was asked how many cookies she gave Adelaide from 5pm to 10pm. She said she gave her2 cookiesat 5pm,4 cookiesat 6pm,1 cookieat 7pm,6 cookies'at 8pm,5 cookiesat 9pm, and1 cookieat 10pm."then your Dot Plot should look just like the one in the picture above.
Understand how to read the plot.Referring to the image within the step above, each dot was placed on the corresponding time of day representing 1 cookie per dot:
- Adelaidereceived6cookies at 8pm, therefore eight dots have been placed onto the Dot Plot above "8pm".
- In this example, 1 dot is equivalent to 1 cookie. As for most dot plots, the dots will more than likely be equal to 1 of something (x = 1).
'One-Dot' Dot Plot
Compared to the Dot Plot.The 'One-Dot' Dot Plot is very similar to the Dot Plot. It's much easier to work with compared to the other. In the following image; You may notice that multiple dots are used. Meanwhile, the One-Dot uses one dot to represent the data.
Creating the 'One-Dot' is very simple, it may require a little bit more work but it's worth it when it comes to saving you time.This time, instead of drawing one line, a simple rectangular box must be drawn.
This time you will be labeling the left side of the plot as well as the bottom, opposed to just labeling the bottom.On the left side of the rectangle you drew, you will need to label it with numbers, going up to the highest number you've been given.
- For example; If the highest number you have been given is3, then the side should be numbered:0,1,2,3(Going no higher than3).
Just as you would do to the dot plot, you must label the bottom depending on your data that you have.If your data requires numbers then you must label it with numbers, and if words are necessary then those will need to be used instead.
Video: How to Do a Dot Plot for Statistics : Statistics 101
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