I have exported a CSV file from my EXCEL worksheet and its last column
contained decimal values:
Subject;Group;Side;Difference;PercentError
M3;1;1;;
M5;1;1;375;18,75
M8;1;1;250;14,58
M10;1;1;500;12,50
M12;1;1;375;25,00
.
.
.
When I tried to do ANOVA test on it, R complained by givin error:
> Anova3LongAuditoryFemaleError.data <- read.csv("C:\\Documents\ and\
> Settings\\Administrator\\My
> Documents\\CogSci\\tez\\Anova3LongAuditoryFemaleError.csv", header = TRUE,
> sep = ";")
> Anova3LongAuditoryFemaleError.aov = aov(PercentError ~ (Group * Side), data =
> Anova3LongAuditoryFemaleError.data)
Error in `storage.mode<-`(`*tmp*`, value = "double") :
invalid to change the storage mode of a factor
In addition: Warning message:
using type="numeric" with a factor response will be ignored in:
model.response(mf, "numeric")
What must I do in order to make the ANOVA test on these fractional data?
Regards.
--
Emre Sevinc
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