Posted by **Statistics** on Wednesday, October 7, 2009 at 8:58pm.

r^2

the corelation squared

measures how well the y hat is than just using y bar or the other way around...

I don't remeber what r^2 measures I have what it means on my calculator but I still don't understand it

My teacher told me it's basically somehting like how much better y hat is to predict y values than y bar or somethiing like that

can you please explain

thanks

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