Thread View: sci.math.stat
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Started by anthony.r.rizzo
Tue, 12 Jan 1993 17:27
factorial design: Resolution?
Author: anthony.r.rizzo
Date: Tue, 12 Jan 1993 17:27
Date: Tue, 12 Jan 1993 17:27
23 lines
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1304 bytes
I'm sure that this is a trivial question for most of you.
But the answer isn't obvious to me. So, here goes:
I'm doing a factorial experiment, 6 variables at two settings.
The variables are qualitative, not quantitative.
According to Box, Hunter, and Hunter, this is a 2^(6-1) half fraction,
because I'm using 32 runs (on a computer). I've assigned
the 6th variable to the column for the 12345 interaction.
Does this make it a resolution VI design? The generator
is: I = 1 2 3 4 5 6
so that 6 = 1 2 3 4 5
1 = 2 3 4 5 6
2 = 1 3 4 5 6
3 = 1 2 4 5 6
4 = 1 2 3 5 6
and 5 = 1 2 3 4 6
Box, Hunter, and Hunter says that "In general, the RESOLUTION of a
two-level fractional design is the length of the shortest
word in the defining relation." Am I interpreting matters correctly?
Tony Rizzo (att.com!hogpb!rizzo)
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