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Concept

Bar Graph

A bar graph is a graphical representation of a frequency distribution of a categorical data. It is made of rectangular bars and each bar represents a category and its frequency in a data set. A bar graph is most often created using the data in a frequency table.
Bar graph with 5 categories: Category 1 has a value of 1, Category 2 has a value of 2, Category 3 has a value of 3, Category 4 has a value of 1, and Category 5 has a value between 3 and 4, closer to 4.
A bar graph can be oriented either horizontally or vertically by swapping which axis shows the categories and which contains the frequency of each category. For example, consider a group of students who are asked what their favorite color is. The categories and values will be adjusted accordingly.
Vertical and Horizontal Bar Graphs
The graphical representation of a frequency distribution for numerical data is called a histogram.
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