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Gujarat Board Class 12 Statistics — Formula Sheet

Gujarat Board Class 12 Statistics formula sheet, chapter by chapter — 47 formulas across 4 chapters. Follows the GSEB syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 4 Chapters

1

Index Number

12 entries
Price Relative = (p₁ / p₀) × 100
Index Number (simple) = Σ(p₁/p₀) / n × 100
Fixed Base Index = (Value in current year / Value in base year) × 100
Chain Base Index (CBS) = (Value in current year / Value in preceding year) × 100
FBS → CBS: CBS = (Current year FBS / Previous year FBS) × 100
The full Index Number formula sheet
3

Linear Correlation

9 entries
r = Cov(X,Y) / (σx × σy)
r = Σ(xi - x̄)(yi - ȳ) / √[Σ(xi - x̄)² × Σ(yi - ȳ)²]
r = [nΣxiyi - (Σxi)(Σyi)] / √{[nΣxi² - (Σxi)²][nΣyi² - (Σyi)²]}
r = Σuivi / √(Σui² × Σvi²) where ui = xi - A, vi = yi - B
r = [nΣuivi - (Σui)(Σvi)] / √{[nΣui² - (Σui)²][nΣvi² - (Σvi)²]}
The full Linear Correlation formula sheet
5

Linear Regression

17 entries
Ŷ = a + bX
b = [n·ΣXY − ΣX·ΣY] / [n·ΣX² − (ΣX)²]
a = Ȳ − b·X̄
b = Cov(X,Y) / Var(X) = σxy / σx²
b = r · (σy / σx)
The full Linear Regression formula sheet

1 more chapter below

Formula sheets for all 4 chapters with formulas.

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Frequently Asked Questions

Where can I find Gujarat Board Class 12 Statistics Formula Sheet?

This page has formula sheet for 4 chapters of Gujarat Board Class 12 Statistics for the board exams 2027. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

4 chapters

1

Index Number

3

Linear Correlation

5

Linear Regression

7

Time Series

More Statistics Resources

Gujarat Board Class 12

Revision Notes

Key concepts and quick revision points

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Syllabus

Chapter list and the topics in each

Other Gujarat Board Class 12 Subjects

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