Inclusion probability
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| − | In probabilistic sampling each element of the [[population]] must have a non-zero probability to be included in a sample. The inclusion probability refers to the chance that | + | In probabilistic sampling each element of the [[population]] must have a non-zero probability to be included in a sample, otherwise unbiased estimation is not possible. The inclusion probability <math>{\pi}_i\,</math> refers to the chance that the <math>i^{th}</math> population element becomes part of a sample. The inclusion probability should be distinguished from the selection probability <math>p(s)</math> of a sample that is the probability that a certain unordered set of elements is selected as sample. |
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Revision as of 15:46, 20 January 2011
In probabilistic sampling each element of the population must have a non-zero probability to be included in a sample, otherwise unbiased estimation is not possible. The inclusion probability \({\pi}_i\,\) refers to the chance that the \(i^{th}\) population element becomes part of a sample. The inclusion probability should be distinguished from the selection probability \(p(s)\) of a sample that is the probability that a certain unordered set of elements is selected as sample.
Inclusion zone
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This section is still under construction! This article was last modified on 01/20/2011. If you have comments please use the Discussion page or contribute to the article! |
