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 difference between average demand and average production of the five companies taken together?

View Hint View Answer Discuss in Forum
On the basis of given graph in question ,
Total demand = 3300 + 1200 + 3000 + 600 + 2500
Number of companies = 5Average demand = 3300 + 1200 + 3000 + 600 + 2500 5 Average demand = 10600 = 2120 5
Total production = 2200 + 2700 + 1500 + 1800 + 1000
Number of companies = 5Average production = 2200 + 2700 + 1500 + 1800 + 1000 5
Correct Option: C
On the basis of given graph in question ,
Total demand = 3300 + 1200 + 3000 + 600 + 2500
Number of companies = 5Average demand = 3300 + 1200 + 3000 + 600 + 2500 5 Average demand = 10600 = 2120 5
Total production = 2200 + 2700 + 1500 + 1800 + 1000
Number of companies = 5Average production = 2200 + 2700 + 1500 + 1800 + 1000 5 Average production = 9200 = 1840 5
&there; Required difference = Average demand : Average production
&there; Required difference = 2120 – 1840 = 280
 What is the ratio of the companies having more demand than production to the companies having more production than demand?

View Hint View Answer Discuss in Forum
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?

View Hint View Answer Discuss in Forum
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?

View Hint View Answer Discuss in Forum
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

View Hint View Answer Discuss in Forum
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