Can anyone help me understand why an lm model summary would return an
r.squared of ~0.18 with an intercept term, and an r.squared of ~0.98
without the intercept? The fit is NOT that much better, according to
plot.lm: residuals are similar between the two models, and a plot of
observed x
Hello all,
I'm trying to do a nested linear model with a dataset that incorporates
an observation for each of several classes within each of several plots.
I have 219 plots, and 17 classes within each plot.
data.frame has columns plot,class,age,dep.var
With lm(dep.var~class*age),
The
Hi all;
Thanks for the responses to my query of how to make tapply into a table
instead of an n-dimensional array. Summary of responses follows:
Peter Dalgaard:
as.data.frame(with(tmp,as.table(tapply(C,list(A=A,B=B),sum
Phil Spector wrote:
z = tapply(y,list(var1,var2,var3,var4),sum)
Dear all,
I'm wanting to do a series of comparisons among 4 categorical variables:
a - aggregate(y, list(var1, var2, var3, var4), sum)
This gets me a very nice 2-dimensional data frame with one column per
variable, BUT, as help for aggregate says, empty subsets are
removed. I don't see in
Department of Statistics
UC Berkeley
[EMAIL PROTECTED]
On Sat, 11 Feb 2006, Joseph LeBouton wrote:
Dear all,
I'm wanting to do a series of comparisons among 4 categorical variables:
a - aggregate(y, list(var1, var2, var3, var4), sum
to look. The sad truth is
that I was heading for a ~10-line hacker solution. You've saved me from
my usual code-writing ignomy.
Happy new year,
-Joseph
Prof Brian Ripley wrote:
On Thu, 5 Jan 2006, Marc Schwartz wrote:
On Thu, 2006-01-05 at 20:27 -0600, Joseph LeBouton wrote:
Hi all,
what
Hi all,
what a great help list! I hope someone can help me with this puzzle...
I'm trying to find a simple way to do:
boxplot(obs~factor)
so that the factors are ordered left-to-right along the x-axis by
median, not alphabetically by factor name.
Complicated ways abound, but I'm hoping for a
Hello, all;
I get an unexpected result when trying to plot a probability histogram
with R1.9.1 on windows xp:
#with the following code:
x - runif(100,0,1)
hist(x)
hist(x, freq=F)
h - hist(x, freq=F)
summary(h)
#Length Class Mode
#breaks 11 -none- numeric
#counts 10
Joseph LeBouton [EMAIL PROTECTED] 08/20/04 09:56am
Hello, all;
I get an unexpected result when trying to plot a probability histogram
with R1.9.1 on windows xp:
#with the following code:
x - runif(100,0,1)
hist(x)
hist(x, freq=F)
h - hist(x, freq=F)
summary(h)
#Length Class Mode
#breaks
