6. Construction of a histogram

Let us consider the data table given below and try to construct a histogram step-by-step.

 

Problem:

 

A private organization surveyed hundred schools in Chennai. The organization collected the average number of kindergarten children in each classroom.

 

The data table looks like this:

 

 

Now, let us try to construct a histogram.

 

Step \(1\): Set and mark the units for \(X\)-axis and \(Y\)-axis.

 

Here, the axes will look like this:

 

 

Step \(2\): Now mark the class intervals (Number of students) along the \(X\)-axis and the frequency along the \(Y\)-axis.

 

 

Step \(3\): Now, construct rectangles with class intervals (number of students) as the base and the frequency as the height.