You have to surround the 2 with ^s:
R^2^ = 0.11
R^2^ = 0.11
Note that this'll bork if you put spaces between the carets: ^2 2^ gives you ^2 2^
You have to surround the 2 with ^s:
R^2^ = 0.11
R^2^ = 0.11
Note that this'll bork if you put spaces between the carets: ^2 2^ gives you ^2 2^