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Solid bars in a bar chart are separated by spaces. Given that there is, in fact, a void between each of the categories, it is a useful tool for visualizing the distribution of variables recorded at the NOMINAL LEVEL and other discrete categorical variables.
Using rectangular bars with heights or lengths proportional to the values they represent, a bar chart or bar graph displays categorical data. Both a vertical and a horizontal bar plot are possible. A vertical bar chart may also be referred to as a column chart.
Comparisons among distinct categories are displayed in a bar graph. The comparison categories are shown on one axis of the chart, and a measured value is shown on the other axis. In certain bar graphs, the bars are grouped together to display the values of multiple measured variables.
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