a string. If set to "log"
, "logit"
, or "odds"
, the standardized
mean \(\theta(x)\) is transformed into \(\psi(x)=log\{\theta(x)\}\),
\(\psi(x)=log[\theta(x)/\{1-\theta(x)\}]\), or
\(\psi(x)=\theta(x)/\{1-\theta(x)\}\), respectively. If left unspecified,
\(\psi(x)=\theta(x)\).