Index Number Class 12 HSC Board 🔥 | Laspeyer's, Paasche's, Dorbish-Bowley's & Marshall's Price Index

Welcome to Lecture 3 of Index Numbers (Class 12 Statistics – Maharashtra Board)! In this lecture, we begin the most important part of the chapter – Weighted Aggregative Methods. You will learn how to calculate different Price Index Numbers using Laspeyres, Paasche, Dorbish-Bowley, Marshall-Edgeworth, and Walsh methods. This lecture explains the logic behind each formula and shows easy tricks to remember them for board exams. ✅ Laspeyres Price Index Number ✅ Paasche Price Index Number ✅ Dorbish-Bowley Price Index Number ✅ Marshall-Edgeworth Price Index Number ✅ Walsh Price Index Number ✅ Formula Comparison Tricks ✅ Step-by-Step Solved Examples ✅ Important 3-Mark Board Questions This chapter carries 7 marks in the Maharashtra Board examination and is one of the easiest scoring chapters when formulas are understood properly. ⏰ TIMESTAMPS 00:00 Introduction & Lecture Overview 00:18 Why Index Numbers is the Easiest Scoring Chapter 00:59 Introduction to Weighted Aggregative Method 01:40 Types of Weighted Price Index Numbers 02:13 Laspeyres Price Index Number Formula 02:44 Paasche Price Index Number Formula 03:23 Easy Trick to Remember Both Formulas 03:31 Dorbish-Bowley Index Explained 04:04 Shortcut Formula for Dorbish-Bowley 04:35 Fisher’s Ideal Index Explained 05:09 Shortcut Formula for Fisher’s Index 05:43 Marshall-Edgeworth Formula Explained 06:49 Formula Revision & Memory Techniques 07:48 Exercise 5.2 Question 1 Begins 08:35 Filling the Data Table 09:04 Calculating P₀Q₀, P₁Q₁, P₀Q₁ & P₁Q₀ 10:52 Finding All Required Totals 13:37 Laspeyres Price Index Calculation 15:22 Paasche Price Index Calculation 18:12 Dorbish-Bowley Price Index Calculation 19:58 Marshall-Edgeworth Price Index Calculation 23:24 Walsh Price Index Number Introduction 24:20 Finding √(Q₀Q₁) 26:00 Calculating P₀√(Q₀Q₁) and P₁√(Q₀Q₁) 27:28 Walsh Price Index Formula Application 29:54 Quick Revision of Walsh Method 30:17 Summary of All Weighted Aggregative Methods 31:04 Importance of Index Numbers in Economics 31:13 Final Tips for Board Exam Preparation 31:30 Conclusion & Subscribe Reminder 📌 Watch Lecture 1 and Lecture 2 before this video for complete understanding of Index Numbers. 👍 Like | Share | Subscribe 🔔 Turn on Notifications for upcoming lectures #IndexNumbers #StatisticsClass12 #MaharashtraBoard #LaspeyresIndex #PaascheIndex #MarshallEdgeworth #WalshIndex #WeightedAggregativeMethod #HSCBoard #Class12Commerce #BoardExamPreparation