[R] How to produce this graphic

Lisa Wang lisawang at uhnres.utoronto.ca
Wed Jan 4 18:30:24 CET 2006

Hello there,

I would like to produce a plot of x<-c(4,5,6),which is the mean of each
group and y<-c('groupA','groupB','groupC'). 

plot (x,y) can not produce any graphics because y is not numerical. 

What should I do to produce this graphic?

Thank you in advance

Lisa Wang
Princess Margaret Hospital

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