A graph showing the differences in frequencies or percentages among the categories of a nominal or an ordinal variable where the "pieces" add up to 100% of the total frequencies is referred to as a
A)bar graph.
B)pie chart.
C)frequency polygon.
D)histogram.

Question

Quizplus · Accepted Answer

A pie chart is the best choice because it accurately represents the proportional differences between categories of a nominal or ordinal variable and allows the viewer to easily see how the "pieces" add up to 100% of the total frequencies. A bar graph and frequency polygon can also represent frequencies or percentages, but they do not have the requirement that the "pieces" add up to 100%. A histogram is used to display the distribution of a continuous variable and is not appropriate for nominal or ordinal variables.

A Graph Showing the Differences in Frequencies or Percentages Among