Concept explainers
Using the data of Problem 15.4 on page 600, stored in DomesticBeer, Perform a natural logarithmic transformation of the dependent variables (calories). Using the transformed dependent variable and the percentage of alcohol and the number of carbohydrates as the independent variables, perform a multiple
a. State the regression equation.
b. Perform a residual analysis of the results and determine whether regression assumptions are valid.
c. At the 0.05 level of significance, is there a significant relationship between the natural logarithm of calories and the percentage of alcohol and the number of carbohydrates?
d. Interpret the meaning of the coefficient of determination
e. Compute the adjusted
f. Compare your results with those in Problem 15.4 and 15.10. Which is best? Why?
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