How to Do a Spline-with-Simultaneous-Confidence-Interval

This article describes how to fit a spline and compute a simultaneous confidence interval. 

Requirements

You will need:

• A Date/Time structure variable.
• At least one Numeric structure variable.

Method

1. Select Anything > Advanced Analysis > Test > Spline with Simultaneous Confidence Interval from the toolbar, or from the Report tree, click + > Advanced Analysis > Test > Spline with Simultaneous Confidence Interval.
2. From Properties , go to Outcome, and select a numeric structure variable
3. For Predictor, select a Date/Time structure variable
4. For Regression type, select the Regression type you want to use:
   • Binary Logit - this is the default.
   • Linear
5. Set the Confidence interval % - the default is 95
6. Set the Draws to show - the default is 30
7. Set the Random seed - the default is 12321

Next

How to Create a Time Series with Dynamic Window Graph