Which of the following best describes a frequency polygon?

JAMB Mathematics 2024 302 views
Source: JAMB · 2024

Which of the following best describes a frequency polygon?

  1. A bar graph used to compare different categories.
  2. A pie chart that shows the proportion of different segments.
  3. A line graph that connects the midpoints of the tops of bars in a histogram to display the distribution of a dataset. ✓
  4. A scatter plot used to show the relationship between two variables.
Explanation

A frequency polygon is drawn by joining the midpoints of the tops of the bars of a histogram with straight lines. It shows how the data is distributed.

A bar graph compares categories, a pie chart shows proportions, and a scatter plot shows the relation between two variables. None of these is a frequency polygon.

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