Regression analysis is an extremely valuable quantitative tool. Briefly discuss how the coefficient of determination and the correlation coefficient are related and how they are used in regression analysis.

Regression analysis is an extremely valuable quantitative tool. Briefly discuss the following using a real world example:

– How the coefficient of determination and the correlation coefficient are related and how they are used in regression analysis.

– How scatter diagrams can be used to identify the type of regression to use.

– The methods used to determine if the regression model is a good model for the presented dependent and independent variable(s).

No forecasting method is perfect under all conditions. Briefly describe the steps used to develop a forecasting system. What is the difference between a causal model and a time-series model? What is a qualitative forecasting model, and when is it appropriate. Provide a real world example of each type of qualitative forecasting model. (50 points)

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