Concept explainers
Using the data of Problem 15.6 on page 601 stored in HondaPrices, Perform a square-root transformation of the dependent variable (price). Using the square root of price as the dependent variable, perform a
a. State the regression equation.
b. Predict the mean price for a five-year-old Honda Civic LX.
c. Perform a residual analysis of the results and determine whether the regression model is valid.
d. At the 0.05 level of significance, is there a significant relationship between the square root of price and age?
e. Interpret the meaning of the coefficient of determination,
f. Compute the adjusted
g. Compare your results with those of Problems 15.6 and 15.12. What model is best? Why?
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