Science Fair Project Encyclopedia
Statistical sample
A sample is that part of a population which is actually observed. 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. If the probabilities of different samples are all equal, for example, the method is called simple random sampling.
See also: Sampling (statistics)
03-10-2013 05:06:04
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details