Penaksiran Dan Pengujian Model Regresi Beta-Logistik Heckman-Willis
| Main Authors: | Hajarisman, Nusar, Saefuddin, Asep |
|---|---|
| Format: | Article info eJournal |
| Bahasa: | eng |
| Terbitan: |
FORUM STATISTIKA DAN KOMPUTASI
, 2010
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| Online Access: |
http://journal.ipb.ac.id/index.php/statistika/article/view/1025 |
Daftar Isi:
- Methods are presented for modeling dose-related effects in proportion data when extra-binomial variability is a concern. Motivation is taken from experiments in developmental toxicology, where the observed proportions. Appeal is made to the well-known beta-binomial distribution to represent the overdispersion. From this, an exponential function of the linear predictor is used to model the dose-response relationship. The spesification was introduced previously for econometric applications by Heckman and Willis; it induces a form logistic regression for mean response, together with a reciprocal biexponential model for the intralitter correlation. For large sample, likelihood based methods for estimating and testing the joint proportion-correlation response are studied.Keywords: logistic regression, beta-binomial distributin, biexponential model