Wikipedia 10K Redux by Reagle from Starling archive. Bugs abound!!!

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back to [[Statistical Ensemble]]

A '''sample''' is that part of a [[population]] which we actually observe. In normal scientific practice, we demand that it be selected in such a way as to avoid presenting a biased view of the population. If [[Statistical Inference]] is to be used, there must be a way of assigning know probabilities of selection to each sample, preferably equal. This method is called [[Simple Random Sampling]].
[[Dick Beldin]]