
| Term | Description |
|---|---|
| Ln(Fit) |
| xk | k th term, each term can be a single predictor or an interaction term |
| bk | estimate of k th regression coefficient |
The ratio of the observed response standard deviation to the fitted standard deviation:

| Term | Description |
|---|---|
| s | standard deviation |
![]() | fitted standard deviation |
The difference between the natural log of the observed response standard deviation and the natural log of the fitted standard deviation. It is the log of the ratio residual:

| Term | Description |
|---|---|
| s | standard deviation |
![]() | fitted standard deviation |
The log residual divided by its asymptotic standard error.