Bar Graph
A bar graph is a graph with rectangular bars with lengths and heights proportional to the values that they represent.
On one axis of the graph, it shows the data categories that are being compared.
The other axis represents the values corresponding to each data category.
Horizontal bar graph
Horizontal bar graphs represent the data horizontally. It is a graph whose bars are drawn horizontally. The data categories are shown on the vertical axis and the data values are shown on the horizontal axis. The length of each bar is equal to the value corresponding the data category and all bars go across from left to right.
The title of the horizontal bar graph tells about the data being represented by the graph.
The vertical axis represents the data categories. Here, the data categories are the colors.
The horizontal axis represents the values corresponding to each data value. Here, the data values are the number of students who like a particular color represented on the vertical axis.
The scale shows the value of 1 unit on the horizontal axis.
From the given horizontal bar graph, we can infer that on the scale1unit represents 5 students and 10 students like the red, 5 like yellow, 20 like blue and 15 like green.
Here, is the data showing the number of children who visited a library during the first three months of a year.
Children in a Library  
Month 
Number of children 
January 
40 
February 
35 
March 
50 
To represent this data on a horizontal bar graph:
So, taking a scale of 10, we get the horizontal bar graph as:
Fun Facts
