CFA Practice Question

There are 155 practice questions for this study session.

CFA Practice Question

Which statement is TRUE?
A. KNN can only be used for binary classification but not for multi-class classification.
B. In a CART model, one feature can appear only once to minimize classification error.
C. Ensemble learning typically produces more accurate and more stable predictions than the best single model.
Explanation: A is false. KNN can be used directly for multi-class classification.

B is false. The same feature can appear several times in combination with other features, and some features may be relevant only if other conditions have been met.

C is true. A single model will have a certain error rate and will make noisy predictions. Ensemble learning typically produces more accurate and more stable predictions than the best single model.

User Contributed Comments 0

You need to log in first to add your comment.