Vertical Line Charts

Vertical Line Charts

GCSE(F),

A Vertical Line Chart is used to show ungrouped discrete data. The data is similar to a bar chart, but the vertical line has no width. The chart shows that the data is discrete (the lines do not touch each other) and that they are ungrouped (there is no width to the vertical line).

Examples

1. A vertical line graph shows the results of a test for Year 10. What was the modal score?

Answer: 48

The highest bar gives the most frequently obtained score. The most frequent score was 12, and this was obtained for a mark of 48.

2. A vertical line graph shows the results of a test for Year 10. What was the range of marks on the test? Use the Vertical line graph, above.

Answer: 33

The lowest score obtained was 28. The highest score obtained was 61. The range of marks is 61 - 28 = 33