MM-estymacja w badaniu średnich przedsiębiorstw w Polsce
MM-estimation in the medium-sized enterprises survey in Poland

Summary/Abstract: Most business surveys are conducted by using survey sampling. As we know, the population of enterprises is characterized by the presence of outliers. The use of classical methods of estimation may produce estimates that are very biased. One therefore looks for methods that will improve the precision of estimates. To deal with this problem, several alternative technique of estimation, less sensitive to outliers, have been proposed in the statistical literature. The aim of paper was to compare usefulness of MM-estimation – one of the robust regression methods- in the medium-sized businesses survey. In the study various approaches used in the MM-estimation will be analyzed. The assessments and conclusions we formulate on the basis of study relied on data from the DG1 survey.

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