A Multiple Range Test for Analysis of Covariance
协方差分析中的多重极差检验
A new test statistic is proposed for making multiple comparisons on adjusted treatment means in analysis of covariance when the dependent and concomitant variates have a multivariate normal distribution. The probability distribution of the range of the adjusted treatment means, suitably Studentized, is derived for the case of one-way analysis of covariance with equal subgroup sizes and one random covariate, and the distribution is found to be free of nuisance parameters.…