A bar graph is a type of way to display quantitative variables where each dot indicates an occurrence of a value in a sample.

Instructions

1. Draw a horizontal line and Label it with the name of the variable
2. Mark regular values of the variable on it
3. For each observation, place a dot above its value on the number line

Example

The following set of data is the scores obtained for midterm test on a 0-100 scale. Construct a dot plot.

10, 90, 95, 100, 65, 50, 60, 50, 90, 55, 60, 70