ANOVA procedure on the sufficient statistics
You can apply the trick that Prof. Dalgaard recently posted in response to a similar question (for one-way ANOVA). For each cell, generate data as: y <- cell.mean + cell.sd * scale(rnorm(cell.count)) Then generate the data frame to feed to aov. HTH, Andy
From: Yun-Fang Juan
Hi,
I have a two-way anova with unequal cell numbers that I want
to analyze.
The problem is I don't have individual observations of the data.
I only have the sufficient statistics (mean, variance, # of
observations) for each cell.
Is there any existing function in S-plus that would allow me
to do aov() with the sufficient statistics?
The table is like
G1 G2 G3 G5 G6
T1
T2
T3
For cell (Ti, Gj) i have mean, variance and # observations
and the factors are unordered.
Thanks a lot for helping me on this in advance.
Yun-Fang
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