Dear R list,
I am trying to fit a one way anova with just one factor and 3 levels. One of my
levels is significant
> av2<-aov(site~Tryptophan, data=datafit)
> summary(av2)
Df Sum Sq Mean Sq F value Pr(>F)
Tryptophan 1 155.3 155.32 5.875 0.025 *
Residuals 20 528.8 26.44
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
But when I try to compute the Tukey test I get this strage warning message and
no values but only NANs
> summary(aov(Tryptophan~as.factor(site), data=datafit))
Df Sum Sq Mean Sq
as.factor(site) 21 31394 1495
> test<-TukeyHSD(aov(Tryptophan~factor(site), data=datafit))
Warning message:
In qtukey(conf.level, length(means), x$df.residual) : NaNs produced
> test
Tukey multiple comparisons of means
95% family-wise confidence level
Fit: aov(formula = Tryptophan ~ factor(site), data = datafit)
$`factor(site)`
diff lwr upr p adj
2-1 -103.70 NaN NaN NaN
3-1 -119.85 NaN NaN NaN
4-1 20.40 NaN NaN NaN
5-1 -70.24 NaN NaN NaN
6-1 7.16 NaN NaN NaN
7-1 22.57 NaN NaN NaN
8.1-1 11.10 NaN NaN NaN
8.2-1 -13.38 NaN NaN NaN
9-1 -5.55 NaN NaN NaN
10-1 -8.88 NaN NaN NaN
11-1 -4.21 NaN NaN NaN
12-1 19.92 NaN NaN NaN
13-1 10.89 NaN NaN NaN
14.1-1 8.85 NaN NaN NaN
14.2-1 -0.15 NaN NaN NaN
15-1 21.76 NaN NaN NaN
16-1 12.45 NaN NaN NaN
etc etc...
Could anyone help me or point me to the right direction?
Thank you very much in advance.
Kind Regards,
Valentina
This email and any files with it are confidential and intended solely for the
use of the recipient to whom it is addressed. If you are not the intended
recipient then copying, distribution or other use of the information contained
is strictly prohibited and you should not rely on it. If you have received this
email in error please let the sender know immediately and delete it from your
system(s). Internet emails are not necessarily secure. While we take every
care, Plymouth University accepts no responsibility for viruses and it is your
responsibility to scan emails and their attachments. Plymouth University does
not accept responsibility for any changes made after it was sent. Nothing in
this email or its attachments constitutes an order for goods or services unless
accompanied by an official order form.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
