Population, sample, parameter, statistic and estimator — IITM BS previous year questions

Population, sample, parameter, statistic and estimator is part of Statistical Inference Setup, Week 7 in Statistics 2. 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.