Use the Following Display for the Next Questions

Short Answer

Use the following display for the next questions. The display is based on
sample annual data relating to the ozone layer monitoring at Halley Station in
Antarctica. The dependent variable is the year. The independent variables are as
follows: the level of ozone in Dobson units (DU), the global temperature (Temp, in
°C ), and the United States chlorofluorocarbon (CFC) gases production (in
thousands of metric tons).

-If exactly two independent variables are to be used to predict the year, which two variables should be chosen?