SPSS Statistics

Hi,

How can I find the predicted y value for a given x using the regression model calculated by SPSS? I have my slope and y-intercept calculated by SPSS so can now input x value and calculate the predicted y value manually but I was wondering if this is possible to do on SPSS? If so, I would like to see the confidence intervals for the predicted y value (given certain x value) so that I can generalise it to the population.

Thank you

Export your model as XML (on the Save subdialog) and then look at the Scoring Wizard on Utilities. You can also use a Selection variable in the Regression dialog and generate predictions for the rest of the sample.

Hi Jon,

Thank you for your answer. This is still not what I am looking for. I want to find a predicted value y for an x value that is currently not in my dataset. I then want to see what is the confidence interval of that predicted value y.

When I use the Utilities -> Scoring Wizard it only lets me calculate predicted values y for the x value in my dataset, not for any other value that is within that range but is not exactly there.

Would you be able to help?

Thank you

That is not correct. After you save the estimated model as xml, you can activate a different dataset and apply the model to it using the Scoring Wizard. The only problem would be if you have a categorical variable (as dummies) but in the new dataset, there is a value for it that was not in the estimation data.