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Home >> Graphs >> Histogram >>

## Histogram

 Pictograph Bar Graph Double Bar Graph Histogram Pie Graph Line Graph Difference between Bar Graph and Histogram

Before you understand what is a Histogram, you are advised to read:

What is Grouped Frequency Table ?

The graphical representation of data of class interval is called as Histogram.
Or in other words, A Histogram is a bar graphs that shows data in intervals.
Or we can also say that: A Graph which represents grouped frequency table; is known as Histogram

Since there is no gap between the class-intervals, there is no gaps between the bars of histogram too and height of bar represents the frequency of class interval.

Example : In a class of 30 students, following numbers represents weight of these students:
30, 31, 51, 35, 40, 39, 42, 43, 36, 49, 44, 33, 37, 47, 52, 38, 32, 50, 39, 40, 45, 46, 53, 35, 31, 41, 51, 33, 46, 53

Put the data in groups and make a Grouped Frequency Distribution Table (as shown below):

Groups (Weight in Kg) Frequency (No. of Students)
30 - 35 6
35 - 40 7
40 - 45 6
45 - 50 5
50 - 55 6
Total 30

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