Abstract
Three procedures for general contrasts among the means in the unbalanced models are compared. These include the Tukey (T), Scheffe (S) and transformed-Tukey (T-T‘) procedures. The comparison is based on the lengths of the confidence ntervals. It is shown that the Tukey procedure gives the shortest confidence intervals for pairwise contrasts. A numerical study is carried out for the general contrasts. It is found that the T and T-T’ procedures perform similarly. In general, the S-procedure is recommended for contrasts involving many ni's. Recommendations for the choice of the procedures are given. © 1989, Taylor & Francis Group, LLC. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 613-632 |
| Journal | Communications in Statistics - Theory and Methods |
| Volume | 18 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1989 |
| Externally published | Yes |
Research Keywords
- contrasts
- multiple comparisons
- Scheffe method
- Studentized augmented range
- Tukey method
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