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• Industries - Transportation
• Western Hemisphere
• Industries - General    ## 18. Aggregation Issues »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction 18.1 In Chapter 15 a basic index number problem was identified: how exactly should the microeconomic information involving possibly millions of prices... ## 1. An Introduction to PPI Methodology »

### Keywords: equation, sampling, statistics, arithmetic, survey

1.1 A price index is a measure of the proportionate, or percentage, changes in a set of prices over time. PPIs measure changes in the prices of domestic producer goo... ## 16. Axiomatic and Stochastic Approaches to Index Number Theory »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction 16.1 As Chapter 15 demonstrated, it is useful to be able to evaluate various index number formulas that have been proposed in terms of their propertie... ## 2. Background, purpose, and Uses of producer price Indices »

### Keywords: equation, sampling, statistics, arithmetic, survey

2.1 PPIs are a key economic indicator in most countries. This chapter provides background information on the development of price indices, discusses the role of nati... ## 15. Basic Index Number Theory »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction The answer to the question what is the Mean of a given set of magnitudes cannot in general be found, unless there is given also the object for the sak... ## 3. Coverage and Classifications »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Population Coverage A.1 Economic activities included in the population coverage 3.1 Although the scope of a PPI may include all d... ## 17. Economic Approach »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction A.1 Setting the Stage 17.1 The family of PPIs provides price indices to deflate parts of the system of national acco... ## 20. Elementary Indices »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction 20.1 In all countries, the calculation of an output PPI proceeds in two (or more) stages. In the first stage of calculation, elementary price indices... ## 11. Errors and Bias in the PPI »

### Keywords: equation, sampling, statistics, arithmetic, survey

A. Introduction 11.1 A number of sources of error and bias have been discussed in the preceding chapters and will be discussed again in subsequent chapters. The purpo... ## Glossary »

### Keywords: equation, sampling, statistics, arithmetic, survey

Accrual recording The recording of the value of a purchase or other transaction at the time the obligation to pay is incurred, as distinct from the time payment is made....   