Definition: Non-probability sampling

Category: Prices

The selection of a sample of producers and products is non-random but based on expert knowledge of judgment. Non-probability sampling is also known as "non-random sampling", "purposive sampling" and "judgmental sampling" ("Eurostat-OECD Methodological Guide for Developing Producer Price Indices for Services").

The deliberate, i.e. non-random, selection of a sample of outlets and products on the basis of the knowledge or judgement of the person responsible. Also known as purposive sampling and judgemental sampling ("Consumer Price Index Manual: Theory and Practice"). http://ec.europa.eu/eurostat/product?code=KS-04-14-661&mode=view International Labour Organization (ILO), International Monetary Fund (IMF), Organisation for Economic Co-operation and Development (OECD), Statistical Office of the European Communities (Eurostat), United Nations (UNECE), The World Bank, "Consumer Price Index Manual: Theory and Practice", Geneva, August 2004