A Residual Diagnostic Plot

As an informal model check, look at a plot of the standardized deviance residuals versus the estimated linear predictors. These values were saved by the procedure to the active dataset.

  1. To produce a scatterplot of Standardized Deviance Residual by Predicted Value of the Linear Predictor, from the menus choose:

    Graphs > Chart Builder...

    Figure 1. Chart Builder
    Chart Builder
  2. In the Chart Builder, select the Scatter/Dot gallery and choose Simple Scatter.
  3. Select Standardized Deviance Residual as the y variable and Predicted Value of the Linear Predictor as the x variable.
  4. Click OK.

These selections produce the scatterplot.

Figure 2. Scatterplot for standardized deviance residual by predicted value of linear predictor
Scatterplot for standardized deviance residual by predicted value of linear predictor

The resulting scatterplot appears to not have any outlying points, with one possible cause for concern; the variability of the residuals appears to change with the value of the linear predictor.

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