1. Briefly explain the meaning of R2. A time series analysis of demand tends to result in a higher R2 than one using cross-sectional data. Why do you think this is the case?

2. Briefly explain the meaning of the t-test for regression analysis. How can the “rule of two” be used to evaluate t-ratios?

3. Check out the web links Summarize one and explain what it might tell us about future business.




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