Sdam071

Question 8 — Data Preparation and Feature Engineering (23 marks) a) You are given a mixed dataset (numerical, categorical, timestamps). Outline a concrete preprocessing pipeline suitable for modeling, including encoding, scaling, and handling time features. Provide brief justification for each step. (14 marks) b) Design two new features (name + formula or construction) that could improve model performance for a predictive task and explain why. (9 marks)