True or false — chart-reading rules

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A pie chart's slices must sum to 100%.

2. Statement is true

   Yes

   Statement

   A bar chart can show negative values.

3. Statement is true

   No

   Statement

   A line chart is most appropriate when the x-axis is categorical, not continuous.

4. Statement is true

   No

   Statement

   A histogram has gaps between bars by convention.