Explain these plots

1. How do the MSE estimates from five-fold cross-validation compare to the MSEs evaluated on the actual test data

2. What pattern do you observe, and how do you explain why it occurs?

Cross-Validation vs Actual Test Data _Cross Validation Error -Train Error Test Error 102 10' 100 10 18 Degree Polynomial Degree 5 _ Cross Validation Error 2 x 10 10 x 10-1 4 10 12 Number of Folds 15