×

An adaptive randomized design with application to estimation. (English) Zbl 1013.62082

Summary: When allocating observations to two populations for estimation or testing, the optimal proportion of the data that should be allocated to the first population, if it exists, often depends on unknown parameters. Adaptive designs have thus been proposed, in which allocation of the next observation is based on an estimate of the optimal proportion computed from the data already gathered. The authors introduce a simple randomized adapave design and give some of its properties. Applications are given to estimating the difference of two success probabilities, and the difference of two normal means.

MSC:

62L05 Sequential statistical design
62K99 Design of statistical experiments
60F05 Central limit and other weak theorems

References:

[1] Blackwell, Design for the control of selection bias, The Annals of Mathematical Statistics 28 pp 449– (1957) · Zbl 0081.36403
[2] Chung, A Course in Probability Theory. (1974) · Zbl 0345.60003
[3] Diaconis, The analysis of sequential experiments with feedback to subjects, The Annals of Statistics 9 pp 3– (1981) · Zbl 0478.62064
[4] Efron, Forcing a sequential experiment to be balanced, Biometrika 58 pp 404– (1971) · Zbl 0226.62086
[5] Eisele, The doubly adaptive biased coin design, Journal of Statistical Planning and Inference 38 pp 249– (1994) · Zbl 0795.62066
[6] Eisele, Central limit theorems for doubly adaptive biased coin designs, The Annals of Statistics 23 pp 234– (1995) · Zbl 0835.62068
[7] Hall, Martingale Limit Theory and Its Application. (1980) · Zbl 0462.60045
[8] V. Melfi & C. Page (1998). Variability in adaptive designs for estimation of success probabilities. In New Developments and Applications in Experimental Design, IMS Lecture Notes-Monograph Series, vol. 34, pp. 106-114.
[9] Melfi, Estimation after adaptive allocation, Journal of Statistical Planning and Inference 87 pp 353– (2000) · Zbl 0969.62051
[10] Robbins, Sequential tests involving two populations, Journal of the American Statistical Association 68 pp 132– (1974) · Zbl 0296.62072
[11] Robbins, A sequential analogue of the Behrens-Fisher problem, The Annals of Mathematical Statistics 38 pp 1384– (1967) · Zbl 0157.48105
[12] Wei, The adaptive biased coin design for sequential experiments, The Annals of Statistics 6 pp 92– (1978) · Zbl 0374.62075
[13] Wei, Statistical inference with data-dependent treatment allocation rules, Journal of the American Statistical Association 85 pp 156– (1990)
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.