Gallup poll. The Gallup organization periodically asks the following question:
If your party nominated a generally well-qualified person for president who happened to be a woman, would you vote for that person?
a) What does the intercept 173 represent in this trend line? What does the slope represent?
b) The R2 for this trend line is 97%. Use this linear model to obtain a forecast for the CPI in April 2007.
c) The actual CPI in April 2007 was 206.686. Compute the absolute percent error for your forecast.