Bar Chart Formulas

Formulas for Bar Chart

Types of Bar Chart 

There are 3 main types of bar charts:

1. Vertical bar graph: This is the most commonly used bar graph, where the bars are plotted vertically. It represents the grouped data vertically.

2. Horizontal bar graph: In this type of bar graph, the bars are plotted horizontally. It is used to compare data sets that are independent of one another.

3. Double bar graph: It is a graphical representation of data that uses two parallel bars of varying heights to display two sets of data on the same graph. The bars can be arranged either vertically or horizontally. 

Properties of Bar Chart:

• The gap between one bar and another is uniform . It can be either horizontal or vertical.
• The bars are of uniform width, and the variable quantity is represented on one of the axes.
• The scale of the bar graph shows the way in which numbers are used in the data. It is a system of marks at fixed intervals that aid in object measurement.

Applications of Bar Chart:

• Comparing summary statistics between categories
• Comparing different groups over time
• Displaying a variable function (sum, average, standard deviation) by categories
• Comparing different categorical or discrete variables, such as age groups, classes, schools, etc.
• Showing time series data