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Question

In which of these situations is a double bar graph useful?
(i) Enrolment of students in class VII in 2009 and 2010
(ii) Marks obtained in term I and term II examinations
(iii) Marks obtained in all subjects of a term examination.


  1. (i) and (ii)

  2. (i) only

  3. (iii) and (i)

  4. (ii) and (iii)


Solution

The correct option is A

(i) and (ii)


Let's consider situation (i).
(i) Enrolment of students in class VII in 2009 and 2010.

Here, we have enrolments in the 2 years 2009 and 2010.

So, double bar graph is useful.

Let's consider situation (ii).

(ii) Marks obtained in term I and term II examinations.

Here, marks obtained in 2 exams. 

So, double bar graph is useful.
 

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