[R] ANOVA precision
sarthur at protogene.com
Wed Sep 13 03:23:19 CEST 2000
Hi, I just ran a one-way ANOVA using R and compared the output to a
one-way ANOVA I created using SAS on the same data set.
Here are the results:
DF Sum Sq Mean Sq F value Pr(>F)
Base 3 27.7449 9.2483 107.99 < 2.2e-16 ***
Residuals 32 2.7449 0.0856
Source DF Squares Mean Square F Value Pr > F
Model 3 27.69085439 9.23028480 107.55 <.0001
Error 32 2.74643538 0.08582611
In a "philosophical" sense, are the rounding differences worth worrying
about (they may not be significant in this case, but sometimes the
differences are in the second digit), or is this an example of "use at
your own risk"?
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