I want to write a R-squared term for my legend but I do not know how. Could someone help me please? My legend syntax is:
legend(2,10, c("BW (MPE=3%, R-squared=0.77)",
"MY (MPE=5%, R-squared=0.80)", pch=c(2,3))
I would liek to express R-squared as R2 as we normally have in the text.