Science Fair Project Encyclopedia
Random sample
A sample is a subset of a larger population. A random sample is one chosen by a method involving a random (i.e. unpredictable) component. A simple random sample is one in which every item/object therein had an equal opportunity/chance/probability of being selected from the larger population containing all items/objects of interest. A probability sample is one in which each item has a known probability of being in the sample.
See also
10-26-2009 08:16:03
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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