Question

making visual comparisons between categorical variables may be difficult in a _____.
○ a. pie chart
○ b. line chart
○ c. column chart
○ d. scatter chart

Explanation:

A line chart is mainly used for showing trends over time or a continuous variable, not for comparing categorical variables visually. Pie charts show proportions of a whole for categorical data, column charts compare quantities across categories, and scatter charts show relationships between two variables. But a line chart is not ideal for direct comparison of categorical variables.

Answer:

B. line chart