On Tue, 25 Jan 2005 15:42:45 +0100, you wrote:
|=[:o) Dear R users,
|=[:o)
|=[:o) Is it reasonable to transform data (measurements of plant height) to the
|=[:o) power of 1/4? I?ve used boxcox(response~A*B) and lambda was close to
0.25.
|=[:o)
IMHO (I'm far to be a statistician) no. I think that Box Cox procedure must
be a
help to people that had none experience in data transforming. In fact data
transforming include other methods that Box Cox procedure can't perform as
rank
transformation, arcsine square root percent transformation, hyperbolic inverse
sine, log-log, probit, normit and logit.
Transformation is not simply an application of a formula to massive data. Is
preferable decide appropriate transformation knowing deepening how and from
where data were collected.
|=[:o) Regards,
|=[:o) Christoph
|=[:o)
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