Introduction to Data Interpretation
Direction: Student strengths of a college in Arts, Science and Commerce from 2004-2005 to 2007-2008 session are shown in the following bar graph. Study the graph and answer the questions that follow.
- The ratio of average number of students in Science to the average number of students in Commerce is :
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According to given bar graph , we have
Total number of students in Science ⇒ 400 + 400 + 450 + 500 = 1750
Total number of students in Commerce ⇒ 200 + 250 + 300 + 250 = 1000
Number of given years = 4
Required ratio = Average number of students in Science : Average number of students in CommerceCorrect Option: B
According to given bar graph , we have
Total number of students in Science ⇒ 400 + 400 + 450 + 500 = 1750
Total number of students in Commerce ⇒ 200 + 250 + 300 + 250 = 1000
Number of given years = 4
Required ratio = Average number of students in Science : Average number of students in Commerce∴ Required ratio = 1750 : 1000 = 7 : 4 4 4
Direction: The bar graph shows the number of males and females (in crores) in India during 1951–1991. Read the graph and answer the following questions
- Assuming that the rate of increase in the total population in India during 1991-2001 remains the same as that was during the period 1981-1991, estimate the total population in India in 2001.
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From the given bar diagram , we see
Total population in 1981 = 35 + 33 = 68 crores
Total population in 1991 = 44 + 41 = 85 crores
Total increase = 85 - 68 = 17 croresPercentage increase = Total increase × 100 Total population in 1981 Percentage increase
=1700 = 25% 68
Total population in 2001 = 125% of 85 crores
Correct Option: B
From the given bar diagram , we see
Total population in 1981 = 35 + 33 = 68 crores
Total population in 1991 = 44 + 41 = 85 crores
Total increase = 85 - 68 = 17 croresPercentage increase = Total increase × 100 Total population in 1981 Percentage increase
=1700 = 25% 68
Total population in 2001 = 125% of 85 croresTotal population in 2001 = 
85 × 125 
crores 100
Total population in 2001 = 106.25 crores
- What is the ratio of the number of females in India in 1961 per thousand males to the number of males in India in 1991 per thousand females?
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As per the given bar graph , we have
Number of females in India in 1961 = 21 crores
Number of males in India in 1961 = 23 crores
Number of males in India in 1991 = 44 crores
Number of females in India in 1991 = 41 croresRequired ratio = 21 × 1000 : 44 × 1000 23 41
Correct Option: E
As per the given bar graph , we have
Number of females in India in 1961 = 21 crores
Number of males in India in 1961 = 23 crores
Number of males in India in 1991 = 44 crores
Number of females in India in 1991 = 41 croresRequired ratio = 21 × 1000 : 44 × 1000 23 41
Required ratio = 21 × 41 : 44 × 23
Required ratio = 861 : 1012
- What was the approximate number of males in India in 1971 per thousands females?
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According to given bar graph , we have
Number of males in India in 1971 = 28 Crores
Number of females in India in 1971 = 26 CroresNumber of men per thousand women in 1971 = Number of males in India in 1971 × 100 Number of females in India in 1971
Correct Option: C
According to given bar graph , we have
Number of males in India in 1971 = 28 Crores
Number of females in India in 1971 = 26 CroresNumber of men per thousand women in 1971 = Number of males in India in 1971 × 100 Number of females in India in 1971 Number of men per thousand women in 1971 = 28 × 100 ≈ 1077 26
- What was the approximate percentage of female population in India during 1991?
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View Hint View Answer Discuss in Forum
On the basis of given graph in question ,
Total population in 1991 = (44 + 41) crores = 85 crores
Female population in 1991 = 41 crores∴ Required percent = Female population in 1991 × 100 Total population in 1991
Correct Option: A
On the basis of given graph in question ,
Total population in 1991 = (44 + 41) crores = 85 crores
Female population in 1991 = 41 crores∴ Required percent = Female population in 1991 × 100 Total population in 1991 ∴ Required percent = 41 × 100 ≈ 48.23% 85
