Index numbers An index or index number combines relative changes in various variables into one figure. Price and volume indices are important indicators in economic statistics. They give aggregated ...

Read about the role of an index number in economics and how index numbers can be applied to all kinds of data, such as inflation or productivity.

The recent interest in index numbers has raised questions about their usefulness and validity. The history and principles of index numbers are discussed, highlighting the importance of a clear ...

The Ideal Log-Change Index Number Kazuo Sato The Review of Economics and Statistics , pp. 223-228 (6 pages) Published By: The MIT Press /stable/1924029 ...

The producer price index (PPI) measures the rate at which the prices of producer goods and services are changing overtime. It is a key statistic for economic and business decision making and inflation ...