Data Interpretation is one of the most important topics in Quantitative Aptitude. Data Interpretation is the process of reviewing data through some predefined processes which will help assign some meaning to the data and arrive at relevant conclusion.
Topics in Data Interpretation:
Pie Chart Tables
Bar Graphs Line Charts
Radar Graphs Mixed Graphs
Caselet Form Missing Data
Model Questions
Directions (Qs. 1 - 5): Study the table carefully to answer the given question. Number of people working in five different companies and the ratio of men and women
1. Number of women working in company H is approximately what percent of the total number of people working in all the companies together?
1) 21 2) 8 3) 2 4) 17 5) 11
Explanation:
Ans: 5
2. What is the total number of men working in companies G and H together?
1) 600 2) 635 3) 640 4) 622 5) 625
Explanation:
Ans: 2
3. How many women are working in company J?
1) 135 2) 125 3) 145 4) 150 5) 110
Explanation:
Ans: 1
4. What is the average number of people working in all the companies together?
1) 515 2) 509 3) 518 4) 505 5) 520
Explanation:
Ans: 2
5. What is the respective ratio of number of women working in company F to the number of women working in company I?
1) 114 : 119 2) 129 : 137
3) 125 : 129 4) 121 : 126 5) 115 : 131
Explanation:
Ans: 3
Directions (Qs. 6 - 10): Study the following graph carefully to answer these questions.
Investments (in Rs.lakh) of two business partners A and B over the years
6. What was the percent rise in A’s investment in 2004 from the previous year?
Explanation:
Ans: 5
7. What was the percent rise in investment of B in 2004 from 2001?
1) 45.6 2) 37.5 3) 30 4) 60 5) 40
Explanation:
Ans: 4
8. What was the percent rise/ fall in the total investment of A and B together from 2002 to 2005? (Rounded off to two digits after decimal.)
1) 8.33% fall 2) 9.09% rise 3) 8.33% rise 4) 9.09% fall 5) 11.11% rise
Explanation:
Ans: 2
9. What is the ratio between total investment of A in 2001, 2002 and 2003 together and the total investment of B in these three years together respectively?
1) 5 : 6 2) 6 : 5 3) 15 : 17 4) 17 : 15 5) 6 : 17
Explanation:
Ans: 1
10. Investment of B in 2003 is approximately what percent of his total investment for all the years together?
1) 12 2) 18 3) 20 4) 17 5) 14
Explanation:
Ans: 5
Directions (Qs. 11 - 15): Study the following pie charts carefully to answer the questions that follow.
Percentage of students enrolled in different streams in a college. Total number of students = 3500
Percentage break-up of girls enrolled in these streams out of the total students. Total number of girls = 1500
11. What is the total number of boys enrolled in Management and IT together?
1) 1050 2) 810 3) 1120 4) 980 5) 430
12. What is the respective ratio of number of girls enrolled in Arts to the number of boys enrolled in Science?
1) 14 : 23 2) 2 : 3 3) 114 : 121 4) 53 : 65 5) 144 : 121
13. What is the total number of girls enrolled in Science and Commerce together?
1) 450 2) 495 3) 345 4) 480 5) 460
14. If 20% of the girls enrolled in Science change their stream to Management, then what will be the new number of Management students altogether?
1) 593 2) 733 3) 453 4) 1003 5) 563
15. Number of girls enrolled in Arts, Science and Commerce forms are what percent of total number of students in the college?
1) 25% 2) 40% 3) 60% 4) 75% 5) 30%
Explanation:
11-2; 380 + 430 = 810
12-3; 570 : 605 Þ 114 : 121
13-4; 165 + 315 = 480
14-1; 380 + 180 + 33 = 593
Directions (Qs. 16 - 20): Study the following information carefully to answer the question.
In a college, there were 8200 students in 2011. The college offers courses in five engineering streams - Computer Science Engineering (CSE), Electrical Engineering (EE), Mechanical Engineering (ME), Aeronautical Engineering (AE) and Civil Engineering (CE). Out of the total number of female students in the college, 45% study Computer Science Engineering. 25% study Electrical Engineering. 18% study Mechanical Engineering and the remaining 408 female students study Aeronautical Engineering. There are no female students in Civil Engineering. Out of the total number of male students in the college, 35% study Computer Science Engineering. 22% study Electrical Engineering. 14% study Mechanical Engineering, 15% study Aeronautical Engineering and the remaining students study Civil Engineering.
16. What is the difference between the total number of male students in Computer Science Engineering and Electrical Engineering together and the total number of female students studying in the same courses together?
1) 428 2) 408 3) 356 4) 258 5) 364
17. What is the average number of students (male and female) in Civil Engineering. Aeronautical Engineering and Mechanical Engineering together?
1) 1168 2) 1192 3) 1002 4) 1086 5) 1028
18. The total number of Male students in Mechanical Engineering and Aeronautical Engineering together are what percent of the total number of students (male and female) studying in these two courses together? (rounded off to nearest integer)
1) 52 2) 69 3) 60 4) 58 5) 66
19. What is the respective ratio between the total number of male students in Aeronautical Engineering to the total number of female students studying in the same course?
1) 35 : 19 2) 32 : 17 3) 31 : 15
4) 30 : 17 5) 33 : 16
20. What is the total number of female students studying in all the courses together?
1) 3400 2) 4800 3) 6800 4) 5100 5) 4080
Explanation: Total students given = 8200
