SASmixed (version 0.1-7)

Cultivation: Bacterial innoculation applied to grass cultivars

Description

The Cultivation data frame has 24 rows and 4 columns of data from an experiment on the effect on dry weight yield of three bacterial inoculation treatments applied to two grass cultivars.

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(a)).

Littel, R. C., Freund, R. J., and Spector, P. C. (1991), SAS System for Linear Models, Third Ed., SAS Institute.

Examples

data(Cultivation)
options(
  contrasts = c(unordered = "contr.SAS", ordered = "contr.poly"))
names( Cultivation )
formula( Cultivation )
fm1Cult <- lme( drywt ~ Inoc * Cult, data = Cultivation, 
                random = list( Block = ~ 1, Cult = ~ 1 ) )
summary( fm1Cult )   # compare with Output 2.10, page 58
VarCorr( fm1Cult )   
anova( fm1Cult )
fm2Cult <- update( fm1Cult, drywt ~ Inoc + Cult )
anova( fm2Cult )
fm3Cult <- update( fm1Cult, drywt ~ Inoc )
anova( fm3Cult )
summary( fm3Cult )
VarCorr( fm3Cult )