Data Interpretation (DI) involves reading and analyzing data presented in tables, bar graphs, pie charts, line graphs, etc. It is a major section in IBPS PO, SBI PO and SSC exams.
Key Formulas
Percentage Change
% Change = (New-Old)/Old × 100
Very commonly asked.
Ratio
A:B = A/B
Compare values directly.
Average
Average = Sum/Count
For series of values.
⚡ Shortcut Tricks
#1
Always read the chart title and units first.
#2
Approximate when exact calculation takes too long.
#3
For pie charts: value = (angle/360) × total.
#4
Check if data is in lakhs/crores — adjust accordingly.