Line Plots

Overview

A line plot is a simple way to organise and visualise data along a number line. It is especially useful for small data sets and provides an immediate visual representation of the frequency of values.

Key Features of a Line Plot

Number Line:

• A horizontal line representing the data values.

Data Points:

• Each data value is represented by a mark (e.g., a cross or dot) above the corresponding value on the number line.

Frequency:

• The number of marks above a value indicates its frequency in the data set.

When to Use Line Plots

• To display and analyse small data sets.
• To observe the frequency distribution of data points.
• To identify patterns, gaps, or outliers in the data.

Worked Examples

Summary

• Line plots are effective for representing small data sets along a number line.
• Each mark on a line plot corresponds to the frequency of a data point.
• Steps to create a line plot:
  1. Draw a number line with the range of data values.
  2. Place marks above the number line for each data point.
  3. Analyse the plot for patterns, clusters, or outliers.
• Line plots are particularly useful for observing distributions and frequencies at a glance.