What is the difference between a bar graph and a histogram?

A bar graph and a histogram may look similar, but they are used for different purposes:

Bar Graph:

• Shows categorical data (data divided into categories like fruits, subjects, or cities).
• Bars are separated by spaces to highlight that categories are distinct.
• The order of bars can be changed without affecting the meaning.
• Example: A bar graph comparing marks scored in Math, Science, and English.

Histogram:

• Shows continuous data (like height, weight, marks ranges, ages).
• Bars touch each other because the intervals represent continuous ranges.
• The order of bars cannot be changed because they follow numerical order.
• Example: A histogram showing how many students scored between 0–10, 10–20, etc.