Data Collection & Pre-processing MCQs

Topic-wise practice questions for Artificial Intelligence & Machine Learning. Test your knowledge, check solutions on demand, and pace your preparation.

Zero-leak answer engine • Rate-limited explanations
Practice in Timed Mode
Q11easy
Which of the following is an example of "Data Leakage" in a machine learning pipeline?
Q12medium
A dataset includes a "Gender" column with values 'Male', 'Female', and 'Other'. If you use One-Hot Encoding, how many new columns will the model add to the dataset?