Function to compute Tukey's Biweight Robust Mean
功能来计算Tukey的Biweight稳健的均值
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Computation of Tukey's Biweight Robust Mean, a robust average that is unaffected by outliers.
杜克的Biweight鲁棒均值是由离群的影响,一个健壮的平均计算。
用法----------Usage----------
tbrm(x, C = 9)
参数----------Arguments----------
参数:x
a numeric vector
数字向量
参数:C
a constant. C is preassigned a value of 9 according to the Cook reference below but other values are possible.
一个常数。 C预先指定的一个值9,根据库克参考以下,但可能是其他值。
Details
详情----------Details----------
This is a one step computation that follows the Affy whitepaper below see page 22. This function is called by chron to calculate a robust mean. C determines the point at which outliers are given a weight of 0 and therefore do not contribute to the calculation of the mean. C=9 sets values roughly +/-6 standard deviations to 0. C=6 is also used in tree-ring chronology development. Cook and Kairiukstis (1990) have further details.
这是一个步骤的计算如下下面见第22页Affy白皮书。此功能被称为chron计算一个强大的平均值。 C决定在哪个离群都给予权重为0,因此不利于计算平均点。 ç= 9套价值约/ -6标准偏差为0。 C = 6也使用树木年轮年表的发展。库克和Kairiukstis(1990)有进一步的细节。