What is the difference between, a bar diagram and a histogram?

Although there are similarities in their appearance, histograms and bar charts are not the same. This post explains some of their differences and why there should not be spaces between the bars of a histogram. read more

First and foremost, a histogram is a development from the bar graph, but it is not identical to a bar graph. read more

The difference in the way that bar graphs and histograms are drawn is that the bars in bar graphs are usually separated where in histograms the bars are adjacent to each other. This is not always true however. read more