7.6.2 Double bar graph

Now let us learn about another type of bar graph

Example 12:

Study the following graph representing the total enrolment of boys and girls in ZPP High School and answer the following questions.

Did you notice that there are two bars for each year? What does the first bar tell you? What does the second bar tell you? This kind of bar graph is called Double bar graph. It presents two observations side by side.

(i) In which year is the enrolment of girls more than the boys?

(ii) In which year is the enrolment of boys and girls the same?

(iii) In which year is the enrolment of girls minimum?

(iv) What is the total enrolment in the year 2007-08?

Example 13:

The following are the marks in Maths and Science of five students in class VII. Present this data in the form of a double bar graph.