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 RRB Group D
Data Interpretation is part of the Mathematics section (25% of the RRB Group D syllabus).
Data Interpretation Solved Examples for RRB Group D
3 exam-pattern data interpretation questions from the practice bank, each with a full solution.
A company's revenue increased by 20% in 2022 and by 10% in 2023. A table shows the expenses of the company in these two years. If the profit in 2021 was Rs. 10 lakhs and the profit in 2022 was Rs. 15 lakhs, what was the percentage increase in profit from 2021 to 2022?
- A.20%
- B.30%
- C.40%
- D.50%Correct
Solution
Profit in 2021 = Rs. 10 lakhs. Profit in 2022 = Rs. 15 lakhs. Increase in profit = 15 - 10 = Rs. 5 lakhs. Percentage increase in profit = (Increase in profit / Profit in 2021) * 100 = (5/10) * 100 = 50%.
The following table shows the number of employees in different departments of a company. If 15% of the employees in the Marketing department are female, and 25% of the employees in the HR department are female, what is the total number of female employees in these two departments? | Department | Number of Employees | |---|---| | HR | 120 | | Marketing | 180 |
- A.48
- B.51
- C.54
- D.57Correct
Solution
Female employees in Marketing = 15% of 180 = (15/100) * 180 = 27. Female employees in HR = 25% of 120 = (25/100) * 120 = 30. Total female employees = 27 + 30 = 57.
A pie chart represents the annual budget allocation for a city. If Education receives 30% of the budget, Healthcare receives 25%, Infrastructure receives 20%, and Other receives 25%, and the total budget is ₹500 crores, what is the difference between the budget allocated to Education and Infrastructure?
- A.₹25 crores
- B.₹50 croresCorrect
- C.₹75 crores
- D.₹100 crores
Solution
Education budget: 30% of ₹500 crores = (30/100) * 500 = ₹150 crores. Infrastructure budget: 20% of ₹500 crores = (20/100) * 500 = ₹100 crores. Difference: 150 - 100 = ₹50 crores.
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 RRB Group D?
236 exam-pattern Data Interpretation questions for RRB Group D Mathematics, each with a step-by-step solution. Practice is free — no sign-up needed to start.