Simple Bar Chart

A simple bar chart is used to represent data involving only one variable classified on a spatial, quantitative or temporal basis. In a simple bar chart, we make bars of equal width but variable length, i.e. the magnitude of a quantity is represented by the height or length of the bars. The following steps are used to draw a simple bar diagram:

• Draw two perpendicular lines, one horizontally and the other vertically, at an appropriate place on the paper.
• Take the basis of classification along the horizontal line ($X –$ axis) and the observed variable along the vertical line ($Y –$ axis), or vice versa.
• Mark signs of equal breadth for each class and leave equal or not less than half a breadth between two classes.
• Finally mark the values of the given variable to prepare required bars.

Example:

Draw simple bar diagram to represent the profits of a bank for $5$ years.

 Years 1989 1990 1991 1992 1993 Profits (million ) 10 12 18 25 42

A simple bar chart showing the profits of a bank for 5 years:

Simple Bar Chart