How do I calculate r^2 determination coefficient and what does it mean?

Question

crisulcampo · Answer

@ganeshie8 @agent0smith

agent0smith · Answer

You could look up the formula if you want to do it by hand...

Otherwise use a calculator,  like a normal person.

crisulcampo · Answer

I have found many formulas on the webside, so I'm a bit confused

agent0smith · Answer

I don't think I've ever worked it out by hand.

crisulcampo · Answer

so what's the procedure by using calculator?

agent0smith · Answer

Depends on the calculator. It comes up on most when you do something like two variable stats. Use Google to find out how to.

agent0smith · Answer

Or do linear regression.

agent0smith · Answer

R^2 shows the percentage of variability in y that is explained by x. Google has good explanations as to the meaning of it.