Displaying 4 results from an estimated 4 matches for "meansq".
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2011 Aug 06
2
Problems to extract data from anova table
...4.075e-16 ***
Ts:t 4 6472.1 1618.01 140.780 < 2.2e-16 ***
Ts:Te:t 8 4181.0 522.63 45.473 1.088e-13 ***
Residuals 27 310.3 11.49
---
Signif. codes: 0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
I need to extract "Residuals DF" and "Residuals MeanSq" from results
> str(results)
List of 1
$ :Classes ?anova? and 'data.frame': 5 obs. of 5 variables:
..$ Df : num [1:5] 2 4 4 8 27
..$ Sum Sq : num [1:5] 1232 4889 6472 4181 310
..$ Mean Sq: num [1:5] 616.1 1222.4 1618 522.6 11.5
..$ F value: num [1:5] 53.6 106.4 140...
2011 May 20
2
extraction of mean square value from ANOVA
Hello,
I am randomly generating values and then using an ANOVA table to find the
mean square value. I would like to form a loop that extracts the mean square
value from ANOVA in each iteration. Below is an example of what I am doing.
a<-rnorm(10)
b<-factor(c(1,1,2,2,3,3,4,4,5,5))
c<-factor(c(1,2,1,2,1,2,1,2,1,2))
mylm<-lm(a~b+c)
anova(mylm)
Since I would like to use a loop to
2008 Apr 10
1
adonis (vegan package) and subsetted factors
...evels have any records. Then I run:
> adonis(CoastNear[,5:118]~Habitat, data = CoastNear,permutations=1000,
+ method='jaccard')
Call:
adonis(formula = CoastNear[, 5:118] ~ Habitat, data = CoastNear,
permutations = 1000, method = "jaccard")
Df SumsOfSqs MeanSqs F.Model R2 Pr(>F)
Habitat 2.0000000 0.0092966 0.0046483 2.0549327 0.0707 0.005
Residuals 54.0000000 0.1221491 0.0022620 0.9293
Total 56.0000000 0.1314457 1.0000
This appears to be wrong - with only two Habitat levels I should...
2002 Jul 11
0
another aov question: unbalanced multiple responses
...I do
> aov( y~Modality*size + Error(Snr/(Modality*size)) )
I indeed get a result without any warning. Remembering a remark on unbalanced designs in aov, I ran the same (?..) test in NCSS. It too gives results without any warnings or errors, but they're not exactly the same. The DF, SumSQ, MeanSq and F values are the same for Snr:size and for Snr:size:Modality, but they are not (except DF) for Snr:Modality and Snr. (On fully balanced data, I did get the same values in both progs.)
I have not found anything purporting to this specific situation in the documentation of either programme, so I...