It thinks twoSided is a variable, but you've never assigned such a variable.
Use "twoSided" instead - that's a string constant.
On Fri, Jul 10, 2009 at 4:04 PM, Mary A. Marion<mms...@comcast.net> wrote:
> Hello,
>
> I am working on using if statements. What is the error message telling me
> here and how do I correct for it?
> I have tried various combinations of quotes.
>
> Thank you.
> Sincerely,
> Mary A. Marion
>
>
> #Find critical values
> crit<-function(n,alpha,type)
> {
> if (type==twoSided)
> {
> alpha2=alpha/2
> tL<-qt(alpha2,n-1)
> tU<-qt(1-alpha2,n-1)
> }
> if (type==Lower)
> {
> tL<- -9999
> tU<-qt(1-alpha,n-1)
> }
> if (type==Upper) {
> tL<-qt(alpha,n-1)
> tU<- 9999
> }
> criticalValues<-c(tL,tU)
> round(criticalValues,3)
> }
> crit(n=50,alpha=.05,type=twoSided)
> Error in crit(n = 50, alpha = 0.05, type = twoSided) :
> object 'twoSided' not found
>>
> crit(n=50,alpha=.05,type=Lower)
> crit(n=50,alpha=.05,type=Upper)
>
> ______________________________________________
> 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.
>
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and provide commented, minimal, self-contained, reproducible code.
