Formula: r = sxy / (sx · sy) — IITM BS previous year questions

Formula: r = sxy / (sx · sy) is part of Pearson Correlation Coefficient (L4.7 - L4.8), 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.