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Data Interpretation Flashcards

6 cards from real Civil Service Numerical Reasoning Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A graph shows that train punctuality improved from 82% to 91%. By how many percentage points did it improve?

    Answer: 9

    91% − 82% = 9 percentage points. Note: this is a difference in percentage points, not a percentage change.

  2. A table shows that 1,200 items were produced in January. In February, production fell by 5%. How many items were produced in February?

    Answer: 1,140

    5% of 1,200 = 60. February production = 1,200 − 60 = 1,140.

  3. A pie chart shows spending: Staff 55%, IT 20%, Premises 15%, Other 10%. Total budget is £400,000. How much is spent on IT?

    Answer: £80,000

    20% of £400,000 = 0.20 × 400,000 = £80,000.

  4. A line graph shows four data points: 15, 22, 19, 28. What is the range?

    Answer: 13

    Range = highest − lowest = 28 − 15 = 13.

  5. A table shows customer complaints per month over 6 months: 12, 8, 15, 10, 9, 14. What is the total?

    Answer: 68

    12 + 8 + 15 + 10 + 9 + 14 = 68.

  6. A report shows that a project was completed 20 days early. The original timeline was 250 days. What percentage of the timeline was saved?

    Answer: 8%

    (20 ÷ 250) × 100 = 8%.