A bar chart or bar plot displays rectangular bars with lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. One axis of the chart shows
the specific categories being compared, and the other axis represents a discrete value. In R, they are made using the barplot function. Bars can be grouped by categories,
Grouped and stacked barplot
Other charts involving barplot
There is a selection of graphics that do not target barplots, but involve it. See also the histogram and boxplot categories.
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