Introduction to Data Interpretation
Direction: Study the following graph and answer the questions. Number on the top of a bar is the number of TVs.
 What is the ratio of the companies having more demand than production to the companies having more production than demand?

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From the given bar diagram , we see
Companies with more demand than production are A, C and E.
Companies with more production than demand are B and D.Correct Option: D
From the given bar diagram , we see
Companies with more demand than production are A, C and E.
Companies with more production than demand are B and D.
∴ Required ratio = 3 : 2
Direction: Given here is a multiple bar diagram depicting the changes in the students strength of a college in four faculties from 1990 – 91 to 1992 – 93. Study the diagram and answer the questions.
 What was the per cent increase in Science students from the year 1990 – 91 to 1992 – 93?

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According to given bar graph , we have
Students’ strength in Science in 199091 = 400
Students’ strength in Science in 199293 = 600
Increase = 600 – 400 = 200Percent increase = Increase × 100 Students’ strength in Science in 199091
Correct Option: A
According to given bar graph , we have
Students’ strength in Science in 199091 = 400
Students’ strength in Science in 199293 = 600
Increase = 600 – 400 = 200Percent increase = Increase × 100 Students’ strength in Science in 199091 Percent increase = 200 × 100 = 50% 400
 The total students strength in 1991 – 92 was how many times that of Commerce students in the same year?

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On the basis of given graph in question ,
Total students’ strength in 199192 = 550 + 500 + 250 +200 = 1500
Students’ strength in commerce in 199192 = 250∴ Required answer = Total students’ strength in 199192 Students’ strength in commerce in 199192
Correct Option: D
On the basis of given graph in question ,
Total students’ strength in 199192 = 550 + 500 + 250 +200 = 1500
Students’ strength in commerce in 199192 = 250∴ Required answer = Total students’ strength in 199192 Students’ strength in commerce in 199192 Required answer = 1500 = 6 250
 The percentage of students in Science faculty in 1990 – 91 was

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According to given bar graph , we have
Number of students in all faculties taken together in 199091 = 600 + 400 + 200 + 150 = 1350
Number of students in science faculty = 400∴ Required percentage = Number of students in science faculty × 100 Number of students in all faculties taken together in 199091
Correct Option: C
According to given bar graph , we have
Number of students in all faculties taken together in 199091 = 600 + 400 + 200 + 150 = 1350
Number of students in science faculty = 400∴ Required percentage = Number of students in science faculty × 100 Number of students in all faculties taken together in 199091 Required percentage = 400 × 100 = 29.6% 1350
 In which faculty was there a regular decrease in students’ strength?

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From the given bar diagram , we see
In Arts faculty, there was a regular decrease in students’ strength as it was 600 in 1990 91, 550 in 199192 and 500 in 199293.Correct Option: A
From the given bar diagram , we see
In Arts faculty, there was a regular decrease in students’ strength as it was 600 in 1990 91, 550 in 199192 and 500 in 199293.
Hence , correct answer is option A.