Been trying to this line to parse for a good 20mins, but all attempts have failed:
\beta = $-$0.84, t = $-$2.09, P = 0.04
Could anyone tell me why I'm getting a Missing $ inserted error here?
egreg is right, of course. The statement should be
The American Mathematical Society, amsmath, package is a sweet piece of information and a very useful tool.