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UCAT Data Interpretation Questions
Practise data interpretation (data interpretation) for the University Clinical Aptitude Test: 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
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Q1.The price of an item changes from £175 to £192.5. What is the percentage change?
Show answer & explanation
Answer: C — 10% increase
Change = 17.5 on a base of 175: 17.5/175 × 100 = 10% increase. Always divide by the ORIGINAL value.
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Q2.The price of an item changes from £325 to £373.75. What is the percentage change?
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Answer: C — 15% increase
Change = 48.75 on a base of 325: 48.75/325 × 100 = 15% increase. Always divide by the ORIGINAL value.
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Q3.The price of an item changes from £250 to £270. What is the percentage change?
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Answer: B — 8% increase
Change = 20 on a base of 250: 20/250 × 100 = 8% increase. Always divide by the ORIGINAL value.
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Q4.The price of an item changes from £225 to £168.75. What is the percentage change?
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Answer: B — 25% decrease
Change = -56.25 on a base of 225: -56.25/225 × 100 = 25% decrease. Always divide by the ORIGINAL value.
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Q5.The average of 5 numbers is 24. If 42 is added, what is the new average?
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Answer: B — 27
Old total = 5 × 24 = 120. New total = 120 + 42 = 162; new average = 162/6 = 27.
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Q6.The average of 6 numbers is 59. If 68 is added, what is the new average?
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Answer: D — 60.29
Old total = 6 × 59 = 354. New total = 354 + 68 = 422; new average = 422/7 = 60.29.
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Q7.The average of 8 numbers is 75. If 98 is added, what is the new average?
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Answer: C — 77.56
Old total = 8 × 75 = 600. New total = 600 + 98 = 698; new average = 698/9 = 77.56.
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Q8.The average of 9 numbers is 69. If 95 is added, what is the new average?
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Answer: C — 71.6
Old total = 9 × 69 = 621. New total = 621 + 95 = 716; new average = 716/10 = 71.6.
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Q9.Sales (units): 2021: 620 · 2022: 260 · 2023: 510 · 2024: 360 · 2025: 680. What was the percentage change in 2022 over 2021?
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Answer: C — -58.06%
Change = 260 − 620 = -360; ÷ 620 × 100 = -58.06%.
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Q10.The price of an item changes from £575 to £632.5. What is the percentage change?
Show answer & explanation
Answer: B — 10% increase
Change = 57.5 on a base of 575: 57.5/575 × 100 = 10% increase. Always divide by the ORIGINAL value.
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 UCAT
University Clinical Aptitude Test — conducted by UCAT Consortium. Aptitude test for medicine and dentistry admissions in the UK and partner universities.
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.
UCAT practice topics
| Topic | Section | Question source |
|---|---|---|
| Verbal Reasoning & Analogies | Reasoning | Calculated + question bank |
| Data Interpretation | Data interpretation | Calculated (new numbers every set) |
| Logical Reasoning | Reasoning | Calculated (new numbers every set) |
| Percentages | Quantitative aptitude | Calculated (new numbers every set) |