Focused Study for Competitive Exams
Data Interpretation – Charts, Graphs & Advanced Problems
Advanced DI includes bar graphs, pie charts, and caselets. Focus on speed and smart calculation.
1. Types of DI
- Bar Graph
- Line Graph
- Pie Chart
- Caselet DI
- Mixed DI
2. Bar Graph Example (Concept)
Bar graphs represent data using rectangular bars.
Example Data:
- Company A: 100 units
- Company B: 150 units
- Company C: 200 units
3. Pie Chart Concept
Pie charts represent percentage distribution.
Example:
Total = 360°
- Section A = 90° → 25%
- Section B = 180° → 50%
- Section C = 90° → 25%
4. Line Graph Concept
Used to show trends over time.
Example: Sales growth from 2020 to 2023
Tough Problems
Q1:
Total sales = 1000 units. If Company A contributes 25%, find units.
Solution:
25% of 1000 = 250 units
Q2:
Ratio of A:B = 2:3 and total = 500. Find A.
Solution:
Total parts = 5
A = (2/5) × 500 = 200
Q3:
Sales increase from 200 to 260. Find percentage increase.
Solution:
Increase = 60
% = (60/200) × 100 = 30%
5. Speed Tricks
- Convert percentages into fractions
- Use approximation where possible
- Focus on ratios instead of full values
- Skip difficult questions first
Exam Strategy
- Read graph carefully before solving
- Identify easy questions first
- Use mental math techniques
- Avoid unnecessary calculations
Shaktimatha Learning
Quantitative Aptitude • Bank Exams • Competitive Preparation
Quantitative Aptitude • Bank Exams • Competitive Preparation
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