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Index Numbers and Time Based Data — Formula Sheet

CBSE · Class 12 · Applied Mathematics

5 formulas from Index Numbers and Time Based Data (CBSE Class 12 Applied Mathematics) on one page, grouped by topic.

49 questions21 flashcards5 formulas & key relations5 concepts

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5 Entries · 2 Sections

Formulas and Key Relations

Tests of Adequacy

Time Reversal Test

P₀₁ × P₁₀ = 1 (where P₀₁ and P₁₀ are reciprocal indices)

Factor Reversal Test

Price index × Quantity index = Value index

Key relations

Include Relative Index, Simple Aggregative Method [In = (Σpn/Σp0) × 100], and Simple Average of Relatives.

Uses base period quantities as weights

ILa = (Σp1Q0/Σp0Q0) × 100.

Uses current period quantities as weights

IPa = (Σp1Q1/Σp0Q1) × 100.

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in Index Numbers and Time Based Data for CBSE Class 12 Applied Mathematics?
Key topics in Index Numbers and Time Based Data include Concept and Types of Index Numbers, Simple (Unweighted) Methods, Weighted Aggregative Methods, Tests of Adequacy. Study these first, then practise questions on each for the CBSE Class 12 board exam.
How many formulas are in Index Numbers and Time Based Data?
This sheet lists 5 formulas from Index Numbers and Time Based Data, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Index Numbers and Time Based Data for the CBSE Class 12 board exam?
Learn the core ideas first, then work through the 49 practice questions on Index Numbers and Time Based Data. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Index Numbers and Time Based Data

All CBSE Class 12 Applied Mathematics Formula Sheet

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