On Apr 17, 2012, at 1:03 PM, MatthewJudd wrote:
Hello I am having some trouble performing a simple ANOVA in R
I am working with 2001 census tract information regarding religion.
I am
quite a rookie at this whole R experiance, but I would like to
improve my
skills.
*I read in my data and subset it accordingly to select only the
columns I
desired. *
newottawa
=ottawa_census[,c(97,121,124,125,126,127,128,129,130,131,132,133)]
newottawa
*This is the formula used to try and perform my ANOVA*
anovaottawa=aov(newottawa$RomanCatholic~newottawa$UnitedChurch)
summary(anovaottawa)
****The (-) in the formula is actually a tilde in my R code (but it
wont
show up properly in this email)
*My Error Message:*
Error in lm.fit(x, y, offset = offset, singular.ok =
singular.ok, ...) :
invalid to change the storage mode of a factor
In addition: Warning message:
In model.response(mf, "numeric") :
using type="numeric" with a factor response will be ignored
I fear that my data is in the wrong format or something of that
nature and
thus R will not allow me to perform analysis on it.
It would seem passing strange to have a variable named RomanCatholic
that was a continuous variable. My guess is that you are not using the
function properly. How much experience do you have with regression
functions in R ... and a corollary question: is this homework?
--
David.
David Winsemius, MD
West Hartford, CT
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