The water runoff data in Exercise 5.1 were analyzed using ln(Q) where Q was the peak rate of flow. Use the Box–Cox method with a linear model containing the logarithms of all nine independent...

The water runoff data in Exercise 5.1 were analyzed using ln(Q) where Q was the peak rate of flow. Use the Box–Cox method with a linear model containing the logarithms of all nine independent variables to determine the transformation on Q. Is λ = 0 within the 95% confidence interval estimate of λ?

Exercise 5.1

Compute the correlation matrix for all variables including the dependent variable Q. By inspection of the correlations determine which variables are most likely to contribute significantly to variation in Q. If you could use only one independent variable in your model, which would it be?