What these questions are
IITM BS exams keep changing the way they ask questions, so these extra practice questions are built on the recent, changing patterns of the Statistics for Data Science I papers, week by week, following the course outline. Within a week the questions go from basic to advanced, with numerical answers, single-choice and multiple-choice questions, and diagrams where the topic has them. Every question has a worked solution, one step at a time. The past papers themselves are on the Stats 1 PYQ page.