Displaying 2 results from an estimated 2 matches for "statistics_experimenters".
Which is the easiest (most elegant) way to force "aov" to treat numerical variables as categorical ?
2010 Jun 14
2
Which is the easiest (most elegant) way to force "aov" to treat numerical variables as categorical ?
...XAMPLE
I consider the latin squares example described at page 157 of the book:
Statistics for Experimenters: Design, Innovation, and Discovery by George E. P. Box, J. Stuart Hunter, William G. Hunter.
This example use the data-file /BHH2-Data/tab0408.dat from ftp://ftp.wiley.com/ in /sci_tech_med/statistics_experimenters/BHH2-Data.zip.
The file tab0408.dat contains following DATA:
> DATA
driver cars additive y
1 1 1 A 19
2 2 1 D 23
3 3 1 B 15
4 4 1 C 19
5 1 2 B 24
6 2 2 C 24
7 3 2 D 14
8 4...
2010 Jun 24
1
BBH2 and FrF2 packages
...the 2^3 factorial experiment described at page 177 of
the book Statistics for Experimenters: Design, Innovation, and Discovery
by George E. P. Box, J. Stuart Hunter, William G. Hunter (BHH2).
This example use the following data in file BHH2-Data/tab0502.dat
at ftp://ftp.wiley.com/
in /sci_tech_med/statistics_experimenters/BHH2-Data.zip
run T C K y
1 1 -1 -1 -1 60
2 2 1 -1 -1 72
3 3 -1 1 -1 54
4 4 1 1 -1 68
5 5 -1 -1 1 52
6 6 1 -1 1 83
7 7 -1 1 1 45
8 8 1 1 1 80
Using these data and the R BHH2 package, I was not able to reproduce the very simple results in the BHH2 book.
In particu...