On Mon, Dec 16, 2019 at 10:14 AM oxy via Help list for GNU Octave <address@hidden> wrote:
Hey guys,
reading polyfit's help i wander how to calculate r-squared
(coefficient of determination).
Could u pls exemplify in a simple linear fit?
Thx!
x=[ 1 2 3];
y=[2 3 5];
q=polyfit(x,y,1)
R=corr(x,y)
r2=R^2
y=[2 3 5];
q=polyfit(x,y,1)
R=corr(x,y)
r2=R^2
this agrees with a sample on