ESTIMATING DEPARTURE FROM NORMALITY

被引：65

作者：

ROYSTON, P

机构：

[1] Department of Medical Physics, Royal Postgraduate Medical School, London, W12 ONN, Ducane Road

来源：

STATISTICS IN MEDICINE | 1991年 / 10卷 / 08期

关键词：

D O I：

10.1002/sim.4780100811

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Departure of a sample from a normal distribution should be assessed by a quantity that is meaningful in terms of the data, rather than merely by the P-value from a test statistic. Indices of departure based on the Shapiro-Francia W' and the Shapiro-Wilk W statistics are derived, and shown to have a natural interpretation in relation to the normal probability plot. A new diagnostic plot is proposed. An example is given which shows the relationship between one of the new indices and errors in calculated reference ranges due to non-normality of the data.

引用

页码：1283 / 1293

页数：11

共 15 条

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