Abstract:
This paper is a brief introduction to the methods used to aggregate purchasing
power parities and related results for the International Comparison Program
for Africa. Using national average prices of a comprehensive set of goods and
services representing all GDP components, unweighted basic heading parities
are obtained through an elementary aggregation process. These basic parities
are in turn aggregated using corresponding basic heading expenditures to generate PPPs - and hence price-adjusted real quantities - for each expenditure
category up to GDP level.
