We can see that the MSE on the training dataset is larger than on the test set, which is an indicator that our model is slightly overfitting the training data in this case.
should be corrected as follows:
We can see that the MSE on the training dataset is less than on the test set, which is an indicator that our model is slightly overfitting the training data in this case.
In original text of the first paragraph in p. 291
should be corrected as follows: