Final quiz

What is the purpose of Internal Node ?

• 1. Denotes a test of an attribute.

• Represents an outcome of the test.

• Holds a class label, predicts the outcome.

• 1. None of the above.

Decision tree is used for?

• Classification

• Regression

• Both Classification & Regression

• Create Oxygen to breath

Which of the index does this formula calculate ?

• Entropy

• Average Entropy

• Gini Index

• Intrinsic Information

What problem does tree pruning methods address in decision trees ?

• Underfitting

• Overfitting

• Noise reduction

• Outlier detection

Which approach to tree pruning involves halting the construction of a tree early and converting a node into a leaf if certain conditions are met ?

• Prepruning

• Postpruning

• Pruning complexity

• Leaf conversion

Choose all the correct statement(s) ?

• When node is pure, entropy should be zero.

• Measure should obey multistage property.

• Mr. Quang is handsome

• When impurity is maximal, entropy should be minimal.

1. What is the primary advantage of pruned decisions tree compared to unpruned ones ?

• Higher accuracy on training data

• Bigger complexity

• Easier interpretability and comprehension

• Faster construction

Choose the best application that Decision Trees should be used

• Predicting whether an user will make a purchase based on browsing history

• Predicting stock prices

• Predicting the likelihood of a customer defaulting on a loan

• Predicting the outcome of a horse race