Decision Tree

What is the desired value for R-squared for a good prediction model.

• Any positive

• Any negative

• Zero

• One

Which of the following indicate a food prediction model?

• Homoscedasticity

• Heterocedasticity

• Both

• None

The mean of the errors (difference between actual and predicted values) should be

• 1

• 0

• -1

• None

The very top node in decision tree is called the:

• Root Node

• Leaf Node

• Stem node

• Tree Node

We prefer splitting the node with least gini index. State True/False

• True

• False

• Not sure

Mark the correct import statement to import decision tree classifier

• from sklearn.linear_model import DecisionTreeClassifier

• from sklearn.tree import DecisionTreeClassifier   

• from sklearn import DecisionTreeClassifier   

• from scikit.tree import DecisionTreeClassifier   

The leaf node has impurity value

• >0.5

• <0.5

• 0

• 1