Yale-NUS Quantitative Reasoning 2020. Derivation of the probabilities of the number of suits in 5 random poker cards: https://math.stackexchange.com/questions/224974/probability-for-suits-in-5-card-poker-hand. Link to Nicholas Metropolis, "The Beginning of the Monte Carlo Method": http://library.lanl.gov/cgi-bin/getfile?15-12.pdf. Adjust your YouTube settings to view video with HD quality and closed captions. Transcript available at: https://michaelgastner.com/R_for_QR/