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Statistic vs Parameter

by danago
Tags: parameter, statistic
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danago
#1
May15-08, 06:31 PM
PF Gold
P: 1,131
Hey. I just wanted to clear something up. My texbook often refers to statistics and parameters. Is a statistic simply a calculation made on a sample, whereas a parameter is a property of the whole property from which the sample was taken?

Thanks in advance,
Dan.
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#2
May16-08, 01:47 AM
P: 270
Yeah, basically. A common definition of "statistic" is "a function of a sample/observation." A parameter is a property of the underlying population distribution. For example, the sample mean is a statistic which, as the sample becomes large, approaches the population mean, which is a parameter.
danago
#3
May16-08, 06:42 AM
PF Gold
P: 1,131
yep ok that answers my question thanks


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