Question: 1. What is R2 (R squared)? 2. What does it measure? How is this relate to X and Y? Pleasebriefly explain. 3. So what, why

1. What is R2 (R squared)?

2. What does it measure? How is this relate to X and Y? Pleasebriefly explain.

3. So what, why does anyone care how high or low R2 squared iswhen evaluating a linear regression forecast? .

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