> I keep getting this "Error in x^2 : non-numeric argument to
> binary operator"
> using multiple different codes, ones which have been verified
> to work by my professor and other students.
I confirm the previous poster's lack of error in running the code supplied. I
also agree that something strange is going on.
But the error message says you have a non-numeric argument in a binary
operator. That means that i) you are using a binary operator (^ in this case)
either yourself or in a function you;re calling and ii) either x or 2 is
non-numeric.
Two possibilities that are siompler than recompiling:
First, are you calling the lm() you think you are? Run traceback() after the
error to see where it actually occurred. You may find a user-defined function
that is masking lm(). That could hang around from a previous R session if you
defined one and saved the image on closing.
Second: Check the class of your input data. Then fix whichever variable should
be numeric and isn't. (this is less likely as lm() returns a different error
with non-numeric input).
S
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