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.