Set λ = −1, and fit the mean function using ols; that is, fit the ols regression with Tension as the response and 1/Sulfur as the regressor. Add a line for the fitted values from this fit to the...

Set λ = −1, and fit the mean function

using ols; that is, fit the ols regression with Tension as the response and 1/Sulfur as the regressor. Add a line for the fitted values from this fit to the plot you drew in If you do.

not have a program that will do this automatically, you can let new be a vector of 100 equally spaced values between the minimum value of Sulfur and its maximum value. Compute the fitted values

and a line joining these points to your graph. Repeat for λ = 0, 1, and so in the end you will have three lines on your plot. Which of these three choices of λ gives fitted values that match the data most closely?