[R] Wrong results from anova
li li
hannah.hlx at gmail.com
Tue Apr 14 19:23:34 CEST 2015
Hi all,
I have following data. When I perform an anova, the residual sum of
square returns to be zero.
But this is wrong, since we can hand calculate the RSS to be around 0.0308.
Did anyone come across the same problem before? Any suggestions?
Thanks.
Hanna
> ydata
Y sample.Y
1 0.477 0.5
2 0.477 0.5
3 0.478 0.5
4 27.320 27
5 27.420 27
6 27.300 27
7 29.440 29
8 29.620 29
9 29.610 29
10 35.840 35
11 35.900 35
12 35.850 35
> fit.Y <- aov(Y~sample.Y, data=ydata)
> summary(fit.Y)
Df Sum Sq Mean Sq F value Pr(>F)
sample.Y 3 2203 734.2 190706 <2e-16 ***
Residuals 8 0 0.0
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
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