A college's economics department is attempting to determine if verbal or mathematical proficiency is more important for
Question:
a. Prepare a graphical plot of the economics GPA versus each of the two verbal proficiency scores and each of the two mathematical proficiency scores. Which variable is a better predictor? Note any unusual patterns in the data.
b. Compute the linear model coefficients and the regression analysis statistics for the models that predict economics GPA as a function of each verbal and each mathematics score. Using both the SAT mathematics and verbal measures and the ACT mathematics and English measures, determine whether mathematical or verbal proficiency is the best predictor of economics GPA.
c. Compare the descriptive statistics-mean, standard deviation, upper and lower quartiles, and range-for the predictor variables. Note the differences and indicate how these differences affect the capability of the linear model to predict.
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Related Book For
Statistics For Business And Economics
ISBN: 9780132745659
8th Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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