The takeaway: every bar graph needs a zero on its scale. If you see one without a zero, be careful. In a future post I'll discuss whether line graphs and other graphs also need a zero on their scales.

Bar charts shorten time to insight, enable straightforward comparisons between different items and data sets, and bring a clean visual representation to your audience. While there are certainly ...

Two graphs walk into a bar: Readout-based measurement reveals the Bar-Tip Limit error, a common, categorical misinterpretation of mean bar graphs. Journal of Vision , 2021; 21 (12): 17 DOI: 10. ...