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Drawing Double Bar Graphs

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Question

What is the difference between the Overall average marks of class A and class B in the 9 subjects?

A

24

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B

16

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C

20

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D

12

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Solution

The correct option is B
16

The data from the graph can be tabulated as :

Sum of average marks of class A = 60 + 70 + 63 + 90 + 70 + 42 + 77 + 54 + 60 = 586

Sum of average marks of class B = 68 + 76 + 54 + 80 + 72 + 48 + 61 + 65 + 78 = 602

Difference between overall average marks = 602 - 586 = 16

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Similar questions

Following graph shows the comparison between Average marks obtained by students of class A and class B in 9 subjects.

Which Subject has the closest margin of average marks when both classes are compared?
Here the horizontal axis is x axis which represents 2classes and vertical axis is y axis which represents marks. The scale is x-axis 1cm = 2classes and y axis 1cm = 10 marks.

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