Correcting a 'Parse Error'

I am getting a parse error on line 70 1SSR=sum(res1.^2); Can anyone help me out here? My class mates have used this code and are getting no errors soIi am stumped.

Answer 1

[KSSV]

A variable name cannot start with a number....

1a = 3  % not allowed
a1 = 3  % allowed 

So rename 1SSR to SSR1, 1R2 to R21.