Introduction to Data Interpretation
Direction: Study the bar diagram and answer the questions.

- The percentage of the boys from Biology Department compared to the total number of boys from all the Departments together is
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On the basis of given graph in question ,
Boys in Biology = 220
Total number of boys = 60 + 220 + 100 + 160 + 120 = 660Required answer = Boys in Biology × 100 Total number of boys Correct Option: C
On the basis of given graph in question ,
Boys in Biology = 220
Total number of boys = 60 + 220 + 100 + 160 + 120 = 660Required answer = Boys in Biology × 100 Total number of boys ∴ Required percentage = 220 × 100 = 100 = 33 1 % 660 3 3
- The average number of boys from all the departments together is
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From the given bar diagram , we see
Total number of boys from all the departments = 60 + 200 + 100 + 160 + 120 = 660
Number of departments = 5Average number of boys = 660 5
Correct Option: B
From the given bar diagram , we see
Total number of boys from all the departments = 60 + 200 + 100 + 160 + 120 = 660
Number of departments = 5Average number of boys = 660 = 132 5
- The difference between the total number of boys and the total number of girls from all the Departments together is
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As per the given bar graph , we have
Total number of boys = 60 + 220 + 100 + 160 + 120 = 660
Total number of girls = 1100
Required difference = Total number of girls - Total number of boysCorrect Option: D
As per the given bar graph , we have
Total number of boys = 60 + 220 + 100 + 160 + 120 = 660
Total number of girls = 1100
Required difference = Total number of girls - Total number of boys
Required difference = 1100 – 660 = 440
- The percentage of the girls from Biology Department compared to the total number of girls from all the other Departments together is
-
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As per the given bar graph , we have
Girls in Biology = 300
Girls in all other departments = 140 + 180 + 260 + 220 = 800∴ Required percentage = 300 × 100 800
Correct Option: A
As per the given bar graph , we have
Girls in Biology = 300
Girls in all other departments = 140 + 180 + 260 + 220 = 800∴ Required percentage = 300 × 100 800 Required percentage = 75 = 37 1 % 2 2
Direction: Sales of Books (in thousand numbers) from Six Branches – B1, B2, B3, B4, B5 and B6 of a publishing Company in 2000 and 2001. Study the graph and answer the questions.

- Find the percentage increase in the sales of books of branch B3 in the year 2001 than the branch B2.
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From the given bar diagram , we see
The sales of books of branch B3 in the year 2001 = 110 thousands
The sales of books of branch B2 in the year 2001 = 65 thousandsRequired percentage = (110 - 65) × 100 65
Correct Option: A
From the given bar diagram , we see
The sales of books of branch B3 in the year 2001 = 110 thousands
The sales of books of branch B2 in the year 2001 = 65 thousandsRequired percentage = (110 - 65) × 100 65 Required percentage = 45 × 100 = 69.2% 65