- No data uploaded
- Instant results
GMAT Data Interpretation Questions
Practise data interpretation (data interpretation) for the GMAT Focus Edition: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Data Interpretation practice
-
Q1.Sales (units): 2021: 290 · 2022: 270 · 2023: 250 · 2024: 850 · 2025: 280. What was the percentage change in 2022 over 2021?
Show answer & explanation
Answer: D — -6.9%
Change = 270 − 290 = -20; ÷ 290 × 100 = -6.9%.
-
Q2.Sales (units): 2021: 720 · 2022: 700 · 2023: 490 · 2024: 360 · 2025: 620. What was the percentage change in 2024 over 2023?
Show answer & explanation
Answer: B — -26.53%
Change = 360 − 490 = -130; ÷ 490 × 100 = -26.53%.
-
Q3.The average of 6 numbers is 71. If 84 is added, what is the new average?
Show answer & explanation
Answer: D — 72.86
Old total = 6 × 71 = 426. New total = 426 + 84 = 510; new average = 510/7 = 72.86.
-
Q4.The average of 9 numbers is 55. If 61 is added, what is the new average?
Show answer & explanation
Answer: D — 55.6
Old total = 9 × 55 = 495. New total = 495 + 61 = 556; new average = 556/10 = 55.6.
-
Q5.The price of an item changes from $575 to $718.75. What is the percentage change?
Show answer & explanation
Answer: A — 25% increase
Change = 143.75 on a base of 575: 143.75/575 × 100 = 25% increase. Always divide by the ORIGINAL value.
-
Q6.The price of an item changes from $125 to $150. What is the percentage change?
Show answer & explanation
Answer: D — 20% increase
Change = 25 on a base of 125: 25/125 × 100 = 20% increase. Always divide by the ORIGINAL value.
-
Q7.Sales (units): 2021: 330 · 2022: 360 · 2023: 750 · 2024: 800 · 2025: 550. What was the percentage change in 2023 over 2022?
Show answer & explanation
Answer: C — 108.33%
Change = 750 − 360 = 390; ÷ 360 × 100 = 108.33%.
-
Q8.Sales (units): 2021: 230 · 2022: 590 · 2023: 540 · 2024: 470 · 2025: 550. What was the percentage change in 2024 over 2023?
Show answer & explanation
Answer: A — -12.96%
Change = 470 − 540 = -70; ÷ 540 × 100 = -12.96%.
-
Q9.Sales (units): 2021: 250 · 2022: 720 · 2023: 280 · 2024: 860 · 2025: 530. What was the percentage change in 2024 over 2023?
Show answer & explanation
Answer: B — 207.14%
Change = 860 − 280 = 580; ÷ 280 × 100 = 207.14%.
-
Q10.Sales (units): 2021: 780 · 2022: 650 · 2023: 450 · 2024: 660 · 2025: 830. What was the percentage change in 2025 over 2024?
Show answer & explanation
Answer: D — 25.76%
Change = 830 − 660 = 170; ÷ 660 × 100 = 25.76%.
How to approach data interpretation questions
Read the table title, units and years before calculating. Approximate first — answer options are often far enough apart that rounding to two significant figures is safe.
About GMAT
GMAT Focus Edition — conducted by Graduate Management Admission Council (GMAC). Business-school admission test with Quantitative Reasoning, Verbal Reasoning and Data Insights.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
GMAT practice topics
| Topic | Section | Question source |
|---|---|---|
| Percentages | Quantitative aptitude | Calculated (new numbers every set) |
| Ratio, Ages & Mixtures | Quantitative aptitude | Calculated (new numbers every set) |
| Algebra | Mathematics | Calculated (new numbers every set) |
| Data Interpretation | Data interpretation | Calculated (new numbers every set) |
| Verbal Reasoning & Analogies | Reasoning | Calculated + question bank |