One of the guidelines for presenting good graphs is that the scale on the vertical axis should begin at zero.

Question

Quizplus · Accepted Answer

This guideline is important because starting the scale at a value other than zero can distort the visual representation of the data and create a misleading impression. For example, a bar graph that starts at a value greater than zero can make differences between bars seem larger or smaller than they really are. Starting the scale at zero ensures the relative height of each bar accurately reflects the magnitude of the data.

One of the Guidelines for Presenting Good Graphs Is That