Frequency Polygon Worksheet

Frequency Polygon Worksheet

Read each question carefully and provide your answers in the space provided. For questions requiring the construction of a frequency polygon, use the graph paper provided or draw accurately on a separate sheet.

1. What is a frequency polygon and how does it differ from a histogram?

2. In a frequency polygon, the midpoints of the class intervals are plotted against their corresponding  .

3. To close a frequency polygon, points are added on the horizontal axis at the midpoints of the class intervals immediately before the first and after the last   class intervals with zero frequency.

4. The following data represents the scores of 30 students in a math test:

Scores: 55, 60, 62, 65, 68, 70, 70, 72, 73, 75, 75, 76, 78, 80, 80, 81, 82, 83, 85, 85, 86, 88, 90, 90, 92, 93, 95, 95, 98, 100

Construct a frequency distribution table with a class width of 5, starting from 50. Then, draw a frequency polygon for this data.

Frequency Distribution Table for Question 4:

Use the grid below to draw your frequency polygon for Question 4.

5. A frequency polygon is most suitable for representing which type of data?

6. A frequency polygon can be used to compare two or more frequency distributions on the same graph.