Exact Simultaneous Confidence Intervals for Multiple Comparisons Among Three or Four Mean Values
- 1 March 1985
- journal article
- research article
- Published by JSTOR in Journal of the American Statistical Association
- Vol. 80 (389) , 196
- https://doi.org/10.2307/2288071
Abstract
A procedure for constructing exact simultaneous confidence intervals for a finite set of multiple comparisons among three or four groups is presented. These confidence intervals are hyperbolic and based on an unbiased estimator of the mean values having a normal distribution with covariance matrix σ2V, where V is an arbitrary known positive definite matrix. This procedure is used to study the amount of conservativeness of Tukey—Kramer intervals for pairwise comparisons in an unbalanced one-way analysis of variance design.Keywords
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