1. Apple Stock Compare the partial regression plot for Market Excess Return in the multiple regression constructed in the previous question with the scatter- plot of Apple Excess Return on Market Excess Return. Scale the x-axis in the partial regression plot to have the same scale as the scatterplot.
2. R & D expenses These data give ten characteristics of 324 firms. What issues do you see if these ten char- acteristics are to be used as explanatory variables in a model that describes the salary of the CEO?