## Introduction to Data Interpretation

#### Data Interpretation

Direction: Study the following graph and answer the questions. Number on the top of a bar is the number of TVs. 1. What is the ratio of the companies having more demand than production to the companies having more production than demand?

1. 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. 1. What was the per cent increase in Science students from the year 1990 – 91 to 1992 – 93?

1. According to given bar graph , we have
Students’ strength in Science in 1990-91 = 400
Students’ strength in Science in 1992-93 = 600
Increase = 600 – 400 = 200

 Percent increase = Increase × 100 Students’ strength in Science in 1990-91

##### Correct Option: A

According to given bar graph , we have
Students’ strength in Science in 1990-91 = 400
Students’ strength in Science in 1992-93 = 600
Increase = 600 – 400 = 200

 Percent increase = Increase × 100 Students’ strength in Science in 1990-91

 Percent increase = 200 × 100 = 50% 400

1. The total students strength in 1991 – 92 was how many times that of Commerce students in the same year?

1. On the basis of given graph in question ,
Total students’ strength in 1991-92 = 550 + 500 + 250 +200 = 1500
Students’ strength in commerce in 1991-92 = 250

 ∴ Required answer = Total students’ strength in 1991-92 Students’ strength in commerce in 1991-92

##### Correct Option: D

On the basis of given graph in question ,
Total students’ strength in 1991-92 = 550 + 500 + 250 +200 = 1500
Students’ strength in commerce in 1991-92 = 250

 ∴ Required answer = Total students’ strength in 1991-92 Students’ strength in commerce in 1991-92

 Required answer = 1500 = 6 250

1. The percentage of students in Science faculty in 1990 – 91 was

1. According to given bar graph , we have
Number of students in all faculties taken together in 1990-91 = 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 1990-91

##### Correct Option: C

According to given bar graph , we have
Number of students in all faculties taken together in 1990-91 = 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 1990-91

 Required percentage = 400 × 100 = 29.6% 1350

1. In which faculty was there a regular decrease in students’ strength?

1. 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 1991-92 and 500 in 1992-93.

##### 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 1991-92 and 500 in 1992-93.
Hence , correct answer is option A.