Statistics

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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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