Studentized Range
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
High Quality Content by WIKIPEDIA articles! In statistics, the studentized range computed from a list x1, ..., xn of numbers is frac{max{,x_1,dots,x_n,} - min{,x_1,dots,x_n,}}{s}, where s^2 = frac{1}{n - 1}sum_{i=1}^n (x_i - overline{x})^2, is the sample variance and overline{x} = frac{x_1 + cdots + x_n}{n} is the sample mean. Generally, studentized means adjusted by dividing by an estimate of a population standard deviation; see also studentized residual. The concept is named after William Sealey Gosset, who wrote under the pseudonym "Student". The fact that the variance is a sample variance rather than the population variance, and thus something that differs from one random sample to the next, is essential to the definition, and...
ISBN: 978-6-1312-3206-0
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Книга по требованию
Дата выхода: июль 2011