line plot


Definition of Line Plot

  • A line plot shows data on a number line with x or other marks to show frequency.

Examples of Line Plot

  • The line plot below shows the test scores of 26 students.



 

The count of cross marks above each score represents the number of students who obtained the respective score.

Solved Example on Line Plot



Which of the line plots represents the prices of different story books given below?



$10, $30, $10, $10, $20, $30, $50, $40, $45, $50, $10, $30, $35, $30, $20, $40, $50




Choices:

 

A. Figure 1

B. Figure 2

 

Correct Answer: A



Solution:

 

Step 1: First arrange the data items from least to greatest.

            $10, $10, $10, $10, $20, $20, $30, $30, $30, $30, $35, $40, $40, $45, $50, $50, $50



Step 2: Now group the data items that are the same.


            4 story books cost $10
            2 story books cost $20
            4 story books cost $30
            1 story book costs $35
            2 story books cost $40
            1 story book costs $45
            3 story books cost $50
   

Step 3: Match the grouped data items with the figures shown. Figure-1 represents the data correctly.

Related Terms for Line Plot

  • Number Line
  • Data
  • Frequency