Cleveland and McGill found that comparative judgments of two quantities depends upon the graph type, and then proposed a ranking of the types according to their effectiveness. Which of the following is at the top of their list?
A) comparison of angle
B) comparison of volume
C) comparison line length along a single axis
D) linear extent with a common baseline

Question

Quizplus · Accepted Answer

Cleveland and McGill's research on graphical perception demonstrated that linear extent with a common baseline (position along a common scale) is the most effective way for people to make accurate comparative judgments between quantities. This is because it leverages our innate ability to judge lengths more accurately than angles or volumes.

Cleveland and McGill Found That Comparative Judgments of Two Quantities