Bar Chart
A bar chart (also known as a column graph) is a simple way to compare discrete, numerical data across categories, using horizontal or vertical bars. One axis shows the categories being compared, while the other axis displays the value scale. The length of the bar thus represents the value. As such, bar charts are useful for comparing different amounts against each other. Bar charts can also be used to display data over time, with the categories being months or years.
Bar charts can provide a clear comparison of different categories, and these categories can be qualitative or quantitative in nature. Bar charts can also be sorted as desired to show data in order of size, name, etc.
It can difficult to label the different bars when there are numerous categories.