We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Group sequential methods based on ranked set samples.
- Authors
Hussein, A.; Muttlak, H.; Al-Sawi, E.
- Abstract
Ranked set sampling (RSS) schemes were originally proposed to increase efficiency in estimation. On the other hand, group sequential methods provide substantial savings in sample and enable us to make decisions as early as possible. In this manuscript, we intend to combine the benefits of the two methodologies. We propose group sequential tests for one and two population means under RSS. We compare the power, average sample sizes and type I errors of the proposed tests to those of group sequential tests based on simple random sampling schemes. We illustrate the utility of the method by using data from HIV trial.
- Subjects
GROUP sequential design; SET theory; STATISTICAL sampling; ERROR analysis in mathematics; PARAMETER estimation; DECISION theory
- Publication
Statistical Papers, 2013, Vol 54, Issue 3, p547
- ISSN
0932-5026
- Publication type
Article
- DOI
10.1007/s00362-012-0448-z