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Chapter 12: Problem 44

What is a frequency polygon?

Short Answer

Expert verified
A frequency polygon is a line graph of a frequency distribution in which points, placed at the midpoints of class intervals at the height of the respective frequencies, are joined together. It allows us to visually analyze the data distribution's shape, modes, skewness, and patterns.

Step by step solution

01

Definition

Firstly, understand that a frequency polygon is a line graph of a frequency distribution. It's created by joining the midpoints of the top of the bars in a histogram, allowing us to visualize the shape of the data distribution.
02

Main Components

Identify the main components of a frequency polygon: the x-axis which represents the categories or class intervals, and the y-axis representing the frequency. Each plotted point on the graph is placed at the midpoint of each class interval at the respective frequency height.
03

Interpretation

Interpret the frequency polygon by identifying peaks (modes), symmetry or skewness, and observations or patterns in the data distribution. The greater the frequency, the higher the point or peak.

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