Data interpretation
16 free practice questions with explanations
PassNova has 16 free Numerical Reasoning Test practice questions on Data interpretation, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Data interpretation: example questions & answers
12 worked examples with answers and explanations below. Practise all 16 Data interpretation questions free in the browser, with instant feedback on every answer.
A monthly sales report shows: January £40,000, February £52,000, March £48,000, April £60,000. What were the total sales for the quarter January to March?
- A£140,000✓
- B£148,000
- C£152,000
- D£160,000
Answer: January to March = £40,000 + £52,000 + £48,000 = £140,000 (April is excluded).
A table of regional staff shows: North 120, South 90, East 60, West 30. What percentage of total staff work in the North region?
- A30%
- B36%
- C40%✓
- D48%
Answer: Total = 300; North = 120; 120 ÷ 300 = 0.40 = 40%.
A chart records daily website visits: Monday 1,200, Tuesday 1,500, Wednesday 900, Thursday 1,800, Friday 1,600. What was the mean number of visits per day?
- A1,360
- B1,400✓
- C1,440
- D1,500
Answer: Total = 7,000 over 5 days; 7,000 ÷ 5 = 1,400.
A company's expenses are split: salaries £180,000, rent £50,000, marketing £30,000, other £20,000. What fraction of total expenses is rent?
- A1/4
- B1/5
- C1/6✓
- D1/8
Answer: Total = £300,000; rent £50,000 ÷ £300,000 = 1/6.
Quarterly profits were: Q1 £25,000, Q2 £30,000, Q3 £20,000, Q4 £45,000. By what percentage did profit increase from Q3 to Q4?
- A55%
- B100%
- C112.5%
- D125%✓
Answer: Increase = £25,000; £25,000 ÷ £20,000 = 1.25 = 125%.
A pie chart of a £2,400 budget shows Housing at 90 degrees of the circle. How much money does Housing represent?
- A£480
- B£600✓
- C£720
- D£900
Answer: 90 degrees is one quarter of 360 degrees; one quarter of £2,400 = £600.
A sales table shows product X sold 240 units at £15 each and product Y sold 180 units at £25 each. What was the combined revenue?
- A£7,200
- B£8,100✓
- C£8,500
- D£9,000
Answer: X: 240 × £15 = £3,600; Y: 180 × £25 = £4,500; total = £8,100.
A report lists energy use (kWh) for four months: 320, 280, 360, 300. The cost is 18p per kWh. What was the total energy cost over the four months?
- A£226.80✓
- B£230.40
- C£234.00
- D£241.20
Answer: Total kWh = 1,260; 1,260 × £0.18 = £226.80.
A bar chart shows membership over five years: 400, 460, 520, 610, 700. What was the average yearly increase in membership over this period?
- A60
- B70
- C75✓
- D80
Answer: Total increase = 700 - 400 = 300 over 4 intervals; 300 ÷ 4 = 75.
A table shows test scores: 45 candidates scored 'Pass', 30 scored 'Merit', 15 scored 'Distinction', and 60 scored 'Fail'. What percentage of candidates achieved at least a Pass?
- A50%
- B55%
- C60%✓
- D75%
Answer: Total = 150; at least a Pass = 45 + 30 + 15 = 90; 90 ÷ 150 = 0.60 = 60%.
A company has offices in three cities with monthly costs: London £48,000, Manchester £30,000, Bristol £22,000. If total annual cost stays constant, what is the average monthly cost per office?
- A£28,000
- B£32,000
- C£33,333✓
- D£35,000
Answer: Monthly total = £100,000 over 3 offices; £100,000 ÷ 3 = £33,333 (to nearest pound).
A dataset of orders shows: online 1,260 orders, phone 540 orders, in-store 900 orders. What is the ratio of online to in-store orders in simplest form?
- A7:5✓
- B9:5
- C14:10
- D3:2
Answer: 1,260:900 divides by 180 to give 7:5.