how to draw a histogram

A histogram is a graphical representation used to display the frequency distribution of continuous data using adjacent rectangular bars.

Steps to Draw a Histogram

1. Draw two perpendicular axes:

   • Horizontal axis (x-axis) for class intervals

   • Vertical axis (y-axis) for frequency

2. Mark class intervals on the x-axis.

3. Mark frequencies on the y-axis.

4. Draw rectangular bars:

   • Width = class interval

   • Height = frequency

5. Bars in a histogram touch each other because the data is continuous.

Example

Important Features

• Bars are connected

• Used for continuous data

• Helps compare frequencies visually

In conclusion, a histogram is drawn using continuous class intervals and frequencies represented by adjoining rectangular bars.