This page challenges you to answer a series of multiple choice exercises about the material discussed in the "Overfitting and pruning" unit.
Question 1
What are the two potential effects of increasing the minimum number of
examples per leaf in a decision tree?
The size of the decision tree increases.
The size of the decision tree decreases.
Well done.
The structure of the decision tree can completely change.
The structure of the decision tree remains mostly unchanged.
Well done.
Question 2
What operations can reduce overfitting in a model known to be
overfitted (for example, by evaluating it on a test dataset).
Increase the maximum depth.
Decrease the maximum depth.
Increase the minimum number of observations in the leaves.
Decrease the minimum number of observations in the leaves.
Increase the minimum gain of a new node.
Decrease the minimum gain of a new node.