Introduction to Data Interpretation
Direction: The following bardiagram shows total number of males and females in five different organisations. Study it carefully to answer the questions.
 By how much percentage is the average number of females from all the organisations together is more than the number of males in organisation ‘D’?

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As per the given bar graph , we have
Total number of women = 3000 + 3500 + 4000 + 1500 + 3700 = 15700
Number of organisation = 5Average number of women = Total number of women Number of organisation Average number of women = 15700 = 3140 5
Number of men in organisation D = 2250
Difference = 3140  2250 = 890
Correct Option: C
As per the given bar graph , we have
Total number of women = 3000 + 3500 + 4000 + 1500 + 3700 = 15700
Number of organisation = 5Average number of women = Total number of women Number of organisation Average number of women = 15700 = 3140 5
Number of men in organisation D = 2250
Difference = 3140  2250 = 890Required percent = Difference × 100 Number of men in organisation D Required percent = 890 × 100 ≈ 40% 2250
 What is the difference between the total number of females and the total number of males from all the organisations together?

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According to given bar graph , we have
Total number of men = (3500 + 4500 + 4700 + 2250 + 3250) = 18200
Total number of women = 3000 + 3500 + 4000 + 1500 + 3700 = 15700
Required difference = Total number of men  Total number of womenCorrect Option: C
According to given bar graph , we have
Total number of men = (3500 + 4500 + 4700 + 2250 + 3250) = 18200
Total number of women = 3000 + 3500 + 4000 + 1500 + 3700 = 15700
Required difference = Total number of men  Total number of women
Required difference = 18200 – 15700 = 2500
Direction: Student strengths of a college in Arts, Science and Commerce from 20042005 to 20072008 session are shown in the following bar graph. Study the graph and answer the questions that follow.
 Percentage increase in total number of students in 20072008 session over that in 20042005 session is approximately

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As per the given bar graph , we have
Total number of students in session 200405 ⇒ 600 + 400 + 200 = 1200
Total number of students in session 200708 ⇒ 700 + 500 + 250 = 1450
Total increase = 1450  1200 = 250Percentage increase = Total increase × 100 Total number of students in session 200405
Correct Option: D
As per the given bar graph , we have
Total number of students in session 200405 ⇒ 600 + 400 + 200 = 1200
Total number of students in session 200708 ⇒ 700 + 500 + 250 = 1450
Total increase = 1450  1200 = 250Percentage increase = Total increase × 100 Total number of students in session 200405 Percentage increase = 250 × 100 = 20.83% 1200
 Approximate percentage of students in Science stream during the session 20062007 is :

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According to given bar graph , we have
Total number of students in during 200607 = 550 + 450 + 300 = 1300
Number of students in Science during 20062007 = 450∴ Required percent = Number of students in Science during 20062007 × 100 Total number of students in during 200607
Correct Option: E
According to given bar graph , we have
Total number of students in during 200607 = 550 + 450 + 300 = 1300
Number of students in Science in 20062007 = 450∴ Required percent = Number of students in Science during 20062007 × 100 Total number of students in during 200607 ∴ Required percent = 450 × 100 = 450 = 34.6 % 1300 13
 The increase in the number of Arts students in 20072008 session over that in 20052006 session is :

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On the basis of given graph in question ,
Number of Arts students in 20072008 = 700
Number of Arts students in 20052006 = 550
Total increase = 700  550 = 150Required percentage increase = Total increase × 100 Number of Arts students in 20052006
Correct Option: C
On the basis of given graph in question ,
Number of Arts students in 20072008 = 700
Number of Arts students in 20052006 = 550
Total increase = 700  550 = 150Required percentage increase = Total increase × 100 Number of Arts students in 20052006 Required percentage increase = 150 × 100 = 27.27% 550