Independence vs association in contingency tables — IITM BS previous year questions

Independence vs association in contingency tables is part of Association Between Two Categorical Variables (L4.1 - L4.3), Week 4 in Statistics 1. Prasnya files every IIT Madras BS previous year question from this subtopic here, each one with a worked explanation. Take the whole set as a timed mock and you get accuracy, pacing and per-question analysis back.