What is a Line Plot in Math? - Definition & Examples

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  • 0:01 What Is a Line Plot?
  • 0:44 Examples
  • 2:18 Constructing a Line Plot
  • 2:52 Lesson Summary
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Lesson Transcript
Instructor: Cory Haley
In this lesson, we will explore the functions and examples of a line plot. Also in this lesson, we will learn to create a line plot, create questions, and interpret data from a line plot.

What Is a Line Plot?

A line plot is a graphical display of data along a number line with Xs or dots recorded above the responses to indicate the number of occurrences a response appears in the data set. The Xs or dots represent the frequency. A line plot will have an outlier. An outlier is a number that is much greater or much less than the other numbers in the data set. A line plot consists of a horizontal line which is the x-axis with equal intervals. It is important for a line to plot to have a title and a label of the x-axis to provide the reader an overview of what is being displayed. Also, line plots must have legends to explain what is being measured.

Examples of a Line Plot

Let's imagine you just completed a survey on the number of pets a student has in their home and then created a table based on the survey results.

Number of Pets Number of Students
0 4
1 5
2 7
3 3
4 1

In the table we can see that 4 students have 0 pets, 5 students have 1 pet, 7 students have 2 pets, 3 students have 3 pets, and 1 student has 4 pets. It is important to note that the line plots in the remainder of this lesson will look different from the one in the introduction because they were created in Microsoft excel.

As you can see, we were able to organize our data into this line plot based off the information presented in the table. Now let's create and answer some questions to gain a better understanding of a line plot.

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