Dispersion
The default dispersion parameter for logistic regression is 1.
However, this may not be adequate for the given data.
Statistica® offers two methods of estimating the dispersion parameter,
.
- The dispersion parameter can be estimated using the deviance goodness of fit statistic, D (see Deviance in Goodness of Fit).
- The dispersion parameter can be estimated using the Pearson
goodness of fit statistic, Pearson
(see Pearson in Goodness of Fit).
