question_answer

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.

                              

A)  (i) and (ii)    

B)  (ii) and (iii)     

C)  (iii) and (i)                 

D)  (i) only