Data Interpretation Practice Questions With Answers

Data interpretation is reading plus arithmetic. Most errors come from misreading the chart, not from the mathematics.

Read first, calculate later

Before touching a number, check the title, units, axes and the base of any percentage. Then read the question and find only the figures it needs.

Worked example

If sales rise from 120 to 150 units, the increase is 30 and the percentage increase is 30/120 × 100 = 25%. Notice that the base is the earlier value, 120, not 150.

Calculation habits

  • Round to convenient numbers when options are far apart
  • Compare fractions by cross-multiplying rather than dividing
  • Keep a short list of common percentages as fractions

Related

Fluency in percentage and averages pays off here. DI is central to CAT DILR and to MAT data analysis.

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Available mock tests

Data Interpretation Practice Test 20 (30 Questions)

Data Interpretation Practice Test 20 (30 Questions)

ReadyGo Learn

₹59 60 min
Data Interpretation Practice Test 19 (30 Questions)

Data Interpretation Practice Test 19 (30 Questions)

Xigma Academy

₹59 60 min
Data Interpretation Practice Test 18 (20 Questions)

Data Interpretation Practice Test 18 (20 Questions)

ReadyGo Learn

Free 40 min
Data Interpretation Practice Test 17 (25 Questions)

Data Interpretation Practice Test 17 (25 Questions)

Xigma Academy

Free 50 min
Data Interpretation Practice Test 16 (30 Questions)

Data Interpretation Practice Test 16 (30 Questions)

ReadyGo Learn

₹59 60 min
Data Interpretation Practice Test 15 (30 Questions)

Data Interpretation Practice Test 15 (30 Questions)

Xigma Academy

₹59 60 min

Related reading

How to Practise Data Interpretation Faster

Data interpretation is a reading task first and a maths task second. Five habits that speed it up.

Mental Maths Techniques for Competitive Exams

A few reliable techniques for multiplication, squares and percentages that save seconds on every question.

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Frequently asked questions

Practise approximation and keep a fixed routine for reading each chart before you calculate.

Using the wrong base for a percentage or misreading the unit.