Sample (statistics): Difference between revisions

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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 known probabilities of selection to each sample, preferably equal. This latter method is called Simple Random Sampling.

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+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 known probabilities of selection to each sample, preferably equal. This latter method is called [[Simple Random Sampling]].
-back to [[Statistical Ensemble]]
+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 known probabilities of selection to each sample, preferably equal. This latter method is called [[Simple Random Sampling]].