中等MATH-STAT-009
A bar chart starts the vertical axis at 40 instead of 0. What is the most likely effect?
A. Differences between bars look larger than they are✓ 答案
B. The mean of the data changes
C. The mode becomes the median
D. Negative frequencies appear
解說
Cutting off the baseline makes equal numerical gaps occupy more of the visible bar. The data, the mean and the frequencies are unchanged. This is a presentation abuse.