STATS 2B03 Chapter Notes - Chapter 11: Confidence Interval
Document Summary
Chapter 11: regression analysis some additional techniques. A dummy variable is a variable that assumes only a finite number of values (such as 0 or 1) for the purpose of identifying the different categories of a qualitative variable. Also yields more precise inferences regarding other parameters since more degrees of freedom are available for the calculation of the error mean square. Use of dummy variables interaction present: Interaction terms represent the interaction between the quantitative and the qualitative independent variables.