What Data Interpretation Questions Test
- Tables and bar/line graphs — reading and comparing
- Pie charts — share, angle and value conversions
- Caselet/mixed DI — data given in prose
- Percentage change and ratio across data points
- Averages and totals across categories
Question bank coverage by sub-pattern
How Data Interpretation Appears in SSC CGL
Data Interpretation is part of the Quantitative Aptitude section (25% of the SSC CGL syllabus). See the full SSC CGL Tier-I breakdown.
Data Interpretation Solved Examples for SSC CGL
12 exam-pattern data interpretation questions from the practice bank, each with a full solution.
A pie chart represents the expenditure of a company. Salaries are 150 degrees, Marketing is 60 degrees, Infrastructure is 80 degrees, and the rest is on Miscellaneous. If the total expenditure is ₹36,00,000, what is the difference between the expenditure on Salaries and Infrastructure?
- A.₹6,00,000
- B.₹7,00,000Correct
- C.₹8,00,000
- D.₹9,00,000
Solution
Expenditure on Salaries = (150/360) * ₹36,00,000 = ₹15,00,000. Expenditure on Infrastructure = (80/360) * ₹36,00,000 = ₹8,00,000. Difference = ₹15,00,000 - ₹8,00,000 = ₹7,00,000.
A scatter plot compares two variables: 'Number of training hours' and 'Employee Performance Score'. The data points show a positive linear relationship with some outliers. What does the presence of outliers suggest?
- A.All employees benefit equally from training.
- B.Some employees perform poorly despite significant training.Correct
- C.Training has no impact on employee performance.
- D.Training always guarantees high performance.
Solution
Outliers are data points that deviate significantly from the general trend. In this context, if there's a positive linear relationship, outliers represent employees who either performed poorly despite having a high number of training hours or performed exceptionally well with very few training hours. Therefore, the presence of outliers suggests that some employees perform poorly despite significant training.
The following line graph shows the number of students enrolled in a university from 2016 to 2020. If the enrollment in 2021 was 10% more than in 2020, how many students were enrolled in 2021? [Assume the line graph shows the following enrollment numbers: 2016: 400, 2017: 450, 2018: 500, 2019: 550, 2020: 600]
- A.620
- B.640
- C.660Correct
- D.680
Solution
The enrollment in 2020 was 600. A 10% increase is 600 * 0.10 = 60. So, the enrollment in 2021 is 600 + 60 = 660.
The number of students enrolled in different faculties in a school is as follows: Science Arts Commerce Vocational Boys Girls Boys Girls Boys Girls Boys Girls 35 18 25 47 45 40 10 30 The percentage of students studying in Science or Vocational subjects is:
- A.93 %
- B.50 %
- C.37.2 %Correct
- D.25 %
Solution
Total students = 35+18+25+47+45+40+10+30 = 250. Science and vocational students = 35+18+10+30 = 93. Percentage = 93/250 * 100 = 37.2%.
The given bar graph shows the number of employees working in 6 departments of a company. What is the difference between the number of employees of Department E and Department C?
- A.50
- B.250
- C.150
- D.200Correct
Solution
From the bar graph, Department E has 100 employees and Department C has 300 employees. The difference is 300 - 100 = 200.
The total production of A type cars in year 2015 and C type cars in 2013 is approximately what percent of the total production of D type cars in five years?
- A.42.4Correct
- B.42.8
- C.43.5
- D.40.2
Solution
Production of A in 2015 + C in 2013 = 48 + 52 = 100. Total production of D = 50+42+45+46+47 = 230. Percentage = (100/230)*100 = 43.47% ~ 43.5%.
The following table shows the marks (out of 100) obtained by five students in five different subjects. Student /Subject Tarun Rohit Mohit Shobhit Sumit Maths 65 69 73 76 90 Physics 80 76 84 85 88 Chemistry 75 84 77 76 78 English 85 88 90 86 82 Physical Education 90 94 95 78 68 Who obtained 72% marks in all the subjects taken together
- A.RohitCorrect
- B.Tarun
- C.Mohit
- D.Sumit
Solution
Rohit's total marks are (69+76+84+88+94) = 411. 411/500 = 0.822 or 82.2%. The question asks for 72% marks. There appears to be an error in the question or options.
If a pie chart shows 25% for Category A, what is the central angle?
- A.60°
- B.90°Correct
- C.120°
- D.45°
Solution
Central angle = 25% × 360° = 90°.
In the year 2013, 2014, 2015 and 2017, the total production of B type cars is how much percent less than the total production of all types of cars in the year 2017? (Correct to 1 decimal place)
- A.15.8
- B.17.6Correct
- C.18.2
- D.18.4
Solution
Total production of B = 39+45+54+72 = 210. Total production in 2017 = 36+72+45+47+55 = 255. Percentage less = (45/255)*100 = 17.6%.
The following bar graph shows exports of cars of type A and B (in ` millions) from 2014 to 2018. What is the ratio of the total exports of cars of type A in 2014 and 2017 to the total exports of cars of type B in 2015 and 2016?
- A.10 : 9
- B.5 : 6
- C.11 : 10Correct
- D.3 : 2
Solution
Total exports of A in 2014 and 2017 = 200 + 300 = 500. Total exports of B in 2015 and 2016 = 275 + 225 = 500. Ratio = 550:500 = 11:10
As per data in the table, what is the percentage of students who got 20 or more marks? Scores 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40 No. of students 13 15 18 12 14 19 6 3
- A.14 %
- B.58 %
- C.54 %
- D.42 %Correct
Solution
Total students = 100. Students with 20 or more = 14+19+6+3 = 42. Percentage = 42/100 * 100 = 42%.
The following table shows the total candidates appeared and number of candidates present, in different exam centres – P, Q and R. Study the table and answer the question that follows. Year P Q R Total Present Total Present Total Present 2016 45 42 56 45 55 50 2017 50 45 75 55 45 40 2018 64 60 65 45 65 55 2019 80 69 84 72 70 62 2020 55 44 80 66 90 85 'Total' denotes total candidates applied for the centre, 'Present' denotes the candidates appeared. In which year was the number of absentees the second highest in total of all centres?
- A.2018
- B.2019
- C.2020
- D.2017Correct
Solution
Calculate absentees for each year: 2016: 14, 2017: 35, 2018: 29, 2019: 31, 2020: 20. Second highest is 2019.
Data Interpretation — Frequently Asked Questions
What actually makes DI sets slow?
Calculation, not comprehension. The data is simple; the marks go to whoever computes percentages and ratios fastest — which is why percentage fluency is a prerequisite.
Should I attempt every question in a DI set?
Usually one question per set is deliberately calculation-heavy. Attempt the direct ones first and return to the heavy one only if time permits.
How many Data Interpretation practice questions does Parikshala have for SSC CGL?
238 exam-pattern Data Interpretation questions for SSC CGL Quantitative Aptitude, each with a step-by-step solution. Practice is free — no sign-up needed to start.