Data Interpretation & Statistics
Data interpretation is not a maths topic — it is a reading topic with arithmetic attached. The questions are easy; the table or graph is where candidates lose time. Read the headings and units before you look at a single number, and most DI sets take a third as long.
Don't read this page — work through it. Each block asks you to commit to an answer before it tells you anything.
Start here: what do you already know?
Data interpretation — true or false?
6 statements · 12s each
The four things to read first
| Read | Why it matters |
|---|---|
| Title | Tells you what the numbers actually are |
| Units | "In lakhs" or "in thousands" scales every answer |
| Row/column headings | Decides which direction you add |
| Footnotes | Often carry an exception that one question depends on |
Thirty seconds spent here saves several minutes across the set.
A worked table
Sales of a company (in lakhs of rupees):
| Year | Product A | Product B | Total |
|---|---|---|---|
| 2022 | 40 | 60 | 100 |
| 2023 | 50 | 70 | 120 |
| 2024 | 60 | 90 | 150 |
From this: A's growth from 2022 to 2024 is (60−40)/40 = 50%. Note the base is the earlier year, always.
Sort by what the question needs
Does this need exact calculation or just estimation?
0/6What is the ratio of A to B in 2024?
Which group does it belong to?
Commit to the answer
Use the sales table above for these.
Method, in order
Match the concept to its rule
Quick reference
Exam tip: DI is where fast candidates gain the most. The arithmetic is easy — the time goes on re-reading the table. Read it once, properly, and answer from what you already understood.