SASmixed (version 0.1-7)

Semiconductor: Semiconductor split-plot experiment

Description

The Semiconductor data frame has 48 rows and 5 columns.

source

Littel, R. C., Milliken, G. A., Stroup, W. W., and Wolfinger, R. D. (1996), SAS System for Mixed Models, SAS Institute (Data Set 2.2(b)).

Examples

options(
  contrasts = c(unordered = "contr.SAS", ordered = "contr.poly"))
data(Semiconductor)
formula( Semiconductor )
names( Semiconductor )
fm1Semi <- lme( resistance ~ ET * position,
                 data = Semiconductor,
                 random = ~ 1 | Grp)
summary( fm1Semi )
VarCorr( fm1Semi )
anova( fm1Semi )
fm2Semi <- update( fm1Semi, resistance ~ ET + position )
anova(fm2Semi)