Frequency Polygon Worksheet
A Grade 10 math worksheet focusing on understanding and constructing frequency polygons from given data.
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Frequency Polygon Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. For questions requiring a frequency polygon, use the provided grid or draw one on separate paper.
1. A frequency polygon is a graphical representation of a distribution.
2. To construct a frequency polygon, we plot the of each class interval against its frequency.
3. The x-axis of a frequency polygon represents the , and the y-axis represents the .
1. Which of the following is NOT a characteristic of a frequency polygon?
It uses line segments.
It is closed at both ends, touching the x-axis.
It is suitable for continuous data.
It uses bars to represent frequency.
2. The mid-point of a class interval is also known as the:
Class limit
Class boundary
Class mark
Class width
1. The following table shows the marks obtained by 50 students in a math test:
Class Interval | Frequency ----------------|---------- 10-20 | 5 20-30 | 8 30-40 | 12 40-50 | 10 50-60 | 7 60-70 | 5 70-80 | 3
a) Calculate the class mark for each class interval.
b) Construct a frequency polygon for the given data on the graph below. Remember to extend it to the x-axis.
1. Describe two advantages of using a frequency polygon over a histogram to represent frequency distributions.
1. A frequency polygon can be used to compare two or more frequency distributions on the same graph.
True
False
2. The area under a frequency polygon is equal to the total frequency.
True
False