[R] AOV() may misslabel random effects.
Giles Crane
gilescrane at verizon.net
Mon Mar 14 17:57:07 CET 2011
Greetings,
The aov() function may mislabel
the random effects as in the example below:
Has anybody else noticed this?
Cordially,
Giles Crane, MPH, ASA, NJPHA
gilescrane at verizon.net
> m2
Call:
aov(formula = y ~ ap + pe + Error(ju), data = d)
Grand Mean: 77.50667
Stratum 1: ju
Terms:
ap
Sum of Squares 4322.538
Deg. of Freedom 12
13 out of 25 effects not estimable
Estimated effects may be unbalanced
Stratum 2: Within
Terms:
ap pe Residuals
Sum of Squares 7047.885 255.034 2981.290
Deg. of Freedom 25 2 35
Residual standard error: 9.229285
Estimated effects may be unbalanced
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