Frequency Polygons Worksheet
A Grade 7 Math worksheet focusing on understanding and constructing frequency polygons from given data.
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Standards
Topics
Frequency Polygons
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. A frequency polygon is a type of graph that displays the of data points.
2. To construct a frequency polygon, you first need to find the of each class interval.
3. The x-axis of a frequency polygon represents the of the class intervals, and the y-axis represents the .
The table below shows the scores of 20 students on a math test.
Scores: 50-59 (3 students), 60-69 (5 students), 70-79 (7 students), 80-89 (4 students), 90-99 (1 student)
4. Construct a frequency polygon for the given data in the graph provided below. Remember to label your axes.
Use the frequency polygon you created above to answer the following questions:
5. Which score range has the highest frequency?
50-59
60-69
70-79
80-89
6. How many students scored 80 or above?
1
4
5
7
7. A frequency polygon is always closed at both ends, connecting to the x-axis at the midpoints of the class intervals just before the first and after the last.
True
False
8. Frequency polygons are best used for comparing two or more frequency distributions.
True
False
9. Explain the main difference between a histogram and a frequency polygon.