Analisis Regresi Poisson untuk Menduga Hubungan Kelimpahan Makrobenthos dengan Parameter Kualitas Perairan
Fungsi peluang poisson merupakan standar model untuk variabel cacah. Sebagai contoh banyaknya makrobenthos dan faktor-faktor oseanografi yang mempengaruhinya dapat didekati dengan model regresi
poisson. Model regresi poisson dapat diduga menggunakan fungsi GLM (generalized linear models) dari program S-PLUS. Faktor-faktor oseanografi yang berpengaruh terhadap jumlah makrobenthos adalah salinitas, kecerahan, kecepatan arus, DO dan suhu.
Kata kunci : peluang poisson, variabel cacah, makrobenthos
The poisson probability provides the standard models for count variable. As an example, the number of makrobenthos and oceanograpy factors could be approach a poisson regression model. The poisson
regression can be fitted using the function GLM, which fits Generailized Linear Models in S-PLUS program. Oceanography factors as having an effect on the number of makrobenthos are salinity, kecerahan, kecepatan
arus,DO dan suhu.
Key words : poisson probability, count variable, makrobenthos
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