| BIB {SASmixed} | R Documentation |
The BIB data frame has 24 rows and 5 columns.
This data frame contains the following columns:
1 < 2 < 3 < 8 < 5 < 4 < 6 < 7
1 to 4.
13 and
24
These appear to be constructed data.
Littel, R. C., Milliken, G. A., Stroup, W. W., and Wolfinger, R. D. (1996), SAS System for Mixed Models, SAS Institute (Data Set 5.4).
str(BIB)
if (require("lattice", quietly = TRUE, character = TRUE)) {
xyplot(y ~ x | Block, BIB, groups = Treatment, type = c("g", "p"),
aspect = "xy", auto.key = list(points = TRUE, space = "right",
lines = FALSE))
}
if (require("lme4", quietly = TRUE, character = TRUE)) {
options(contrasts = c(unordered = "contr.SAS", ordered = "contr.poly"))
## compare with Output 5.7, p. 188
print(fm1BIB <- lmer(y ~ Treatment * x + (1 | Block), BIB))
print(anova(fm1BIB)) # strong evidence of different slopes
## compare with Output 5.9, p. 193
print(fm2BIB <- lmer(y ~ Treatment + x : Grp + (1 | Block), BIB))
print(anova(fm2BIB))
}