Why do some graphs display data in a misleading way?
Misleading graphs may be created intentionally to hinder the proper interpretation of data or accidentally due to unfamiliarity with graphing software, misinterpretation of data, or because data cannot be accurately conveyed. Misleading graphs are often used in false advertising.
How do you fix a misleading graph?
There are two solutions to this problem. First, simply include the zero value into your graph. It will show the data as is without the difficulties of reading the Y-axis. Second, there may be times when adding zero is actually quite misleading.