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.

There are a total of fourteen IN-13 bar graph tubes that map out the audio spectrum. The build uses purely hardware for the display; no microcontroller processing, or dedicated VU-meter chips were ...

Credit: Shutterstock Bar graphs seem like one of the simplest ways to represent data. Many people assume that the longer the bar, the bigger the number it represents. Sometimes bar graphs represent an ...

If you’re a biomedical researcher and you’re using bar graphs for continuous data, Tracey L. Weissgerber has one word for you: “Stop.” Weissgerber, a physiologist at Mayo Clinic, is on a ...