The final part, "Linear Trend," describes the predictor. Notice that the model you have specified consists only of the time index regressor _LINEAR_ and an intercept. Although this window is normally ...

Using the linear trend model also allows testing trends before and after particular changepoints. Options are (1) to test trends before and after a priori selected changepoints or (2) to let TRIM ...

PROC FORECAST can fit three types of time trend models: constant, linear, and quadratic. For other kinds of trend models, other SAS procedures can be used. Exponential smoothing fits a time trend ...