Lecture 1.2: Marginal PMF of discrete random variables

[@avenumadhav3568]

definition: 1:00 marginalization equations: 1:50 2:25 4:47 from table: 5:23 6:03 verify valid pmf: 7:08 same marginal, different joint pmf: 8:10 8:57 example: 11:26 check from independence from JPMF and MPMF: 12:12