My original legend is
matplot(c,cbind(ES5,ES75,chisq,t),type ='l',
col=c("brown","red","blue","black"),ylab='power')
legend(5,0.7,paste(c("0.5th ES test","0.75th ES test", "Chi-square test", "t
test")),col=c("brown","red","blue","black"),lty=1:4,cex=1)
I would like to change "Chi-square" to the greek letter chi^2, how could I do
it in R?
Thanks,
Kate
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