Statistics (III)

Mathematics SSS 1 Third Term


Statistics (III)

Performance Objectives

Students should be able to;

  1. Construct frequency polygon from a grouped data
  2. Interpret frequency polygon
  3. Compute data in a frequency polygon graph

Frequency polygon


The frequency polygon is obtained by joining the midpoints of the tops of the histogram rectangles with straight lines. Since the polygon is a closed figure, we take one interval below the lowest internal on the base axis. Then we join the ends of the polygon to the midpoints of the new intervals.

A frequency polygon is another graphical representation of a distribution. It is obtained in two ways.

  1. By joining the midpoints.... View More

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