Dear All,
I wonderif there is a simple way to draw a regression line in the xyplot:
more specifically, let:
age <- c(20:30, 31:40 )
age.cut <- cut(age, breaks = 2 )
y<- rnorm(20)
x <- rnorm(20,4,1)
xyplot(y ~ x| age.cut, xlab="x", ylab="y")
How to draw (in the plot given by xyplot) the two regression lines (y ~ x)
corresponding to the two category of age.cut ?
Thanks a lot,
Bernard
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