Thank you very much for the suggestions.
On 2011-12-13 3:20, Richard M. Heiberger wrote:
...
On Mon, Dec 12, 2011 at 7:00 AM, Jinsong Zhao jsz...@yeah.net
mailto:jsz...@yeah.net wrote:
Apart from the data set here, is there a way to do multiple
comparison on the interaction of one way
On 2011-12-11 22:49, Bert Gunter wrote:
Inline below.
-- Bert
Graph the data sensibly to figure out what's going on. Statistical
machinationsand anova tables with P values alone are not sufficient
and can be opaque or misleading.
If you do not know what sensibly is (or even if you do),
On 2011-12-12 1:48, Richard M. Heiberger wrote:
Thank you for you use of HH.
I think the right graph for this data is the much simpler ancova function
library(HH)
ancova(y ~ year * Trt, data=mydata)
where we see that the three treatments have totally different slopes.
Thank you very much for
...
On Mon, Dec 12, 2011 at 7:00 AM, Jinsong Zhao jsz...@yeah.net wrote:
Apart from the data set here, is there a way to do multiple comparison on
the interaction of one way analysis of covariance?
Interaction in ancova usually means the slopes are different.
...
BTW, when loading HH
Hi there,
The following data is obtained from a long-term experiments.
mydata - read.table(textConnection(
+y year Trt
+ 9.37 1993 A
+ 8.21 1995 A
+ 8.11 1999 A
+ 7.22 2007 A
+ 7.81 2010 A
+10.85 1993 B
+12.83 1995 B
+13.21 1999 B
+
Inline below.
-- Bert
On Sun, Dec 11, 2011 at 4:15 AM, Jinsong Zhao jsz...@yeah.net wrote:
Hi there,
The following data is obtained from a long-term experiments.
mydata - read.table(textConnection(
+ y year Trt
+ 9.37 1993 A
+ 8.21 1995 A
+ 8.11 1999 A
+
Thank you for you use of HH.
I think the right graph for this data is the much simpler ancova function
library(HH)
ancova(y ~ year * Trt, data=mydata)
where we see that the three treatments have totally different slopes.
The WoodEnergy example doesn't apply here. The WoodEnergy example
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