Developing Consistency in the Terminology and Display of Bar Graphs and Histograms
Students often are confused about the differences between bar graphs and histograms. The authors discuss some reasons behind this confusion and offer suggestions that help clarify thinking.
Humphrey, Patricia B., Sharon E. Taylor, Kathleen Cage Mittag.
"Developing Consistency in the Terminology and Display of Bar Graphs and Histograms."
Teaching Statistics, 36 (3): 70-75.