Training Program

This course is intended to broaden participants' understanding of the concepts, methods, and challenges of compiling CPIs. It provides an overview of the index number theory and the practical implications of choosing the index number formula at lower and higher levels of aggregation. The course covers the sources and methods for developing/validating weights; and practical applications of the methods used for sampling areas, items, outlets, and varieties. New and emerging data sources as well as new collection technologies are discussed. Frontier issues including how to better measure the digital economy are included. Linkages to the 2025 SNA are highlighted, including the related principles of scope, coverage, and valuation.
The course covers the following topics:

• calculating elementary and upper-level indexes;
• methods for handling temporarily and permanently missing prices;
• introducing new outlets, items, and varieties;
• adjusting prices for quality changes;
• chaining and linking indexes with updated weighting structures; and
• meeting data users' needs to ensure relevancy.
  The course follows the principles and recommendations of the CPI Manual (2020).