Bank Exam Speed Maths

Page 15: Data Interpretation (DI Basics & Strategy)

1. What is Data Interpretation?

DI involves analyzing data presented in tables, charts, or graphs.

Used to test calculation speed and analytical ability.

2. Types of DI Questions

• Table DI

• Bar Graph

• Pie Chart

• Line Graph

• Caselet DI

3. Table DI Example

Year → 2020 | 2021 | 2022

Sales → 100 | 150 | 200

Question: Increase from 2020 to 2022?
= 200 - 100 = 100

4. Percentage-Based DI

Use percentage shortcuts to solve quickly

Example:
Increase from 100 to 150
= 50% increase

5. Ratio-Based DI

Compare values using ratios

Example:
100 : 200 = 1 : 2

6. Approximation Trick

Round numbers for faster calculation

Example:
198 ≈ 200, 302 ≈ 300

7. DI Strategy (Exam Tips)

• First read questions, then analyze data

• Use approximation where possible

• Avoid lengthy calculations

• Focus on easy questions first

8. Practice Questions

1. If value increases from 200 to 300 → % increase?

2. Ratio of 150 and 300?

3. Difference between 500 and 350?

4. Approximate 198 + 302?

5. Which DI type uses percentages most?