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Charlotte Robinson——Studied at the University of Lagos, Lives in Lagos, Nigeria.
A statistic is an estimator of some parameter in a population. ... The sample standard deviation (s) is a point estimate of the population standard deviation (--). The sample mean (?x) is a point estimate of the population mean, --May 20, 2015read more >>+119962023-06-23 10:21:02
About “估计值、平均值、偏差”，people ask：
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