https://hackmd.io/q20Hza-cQZCGyfHSiWxgnw
https://hackmd.io/ZFQBvlXESVeSSLsEaMgGOA
https://hackmd.io/oylLnbUBRqy9pimRScgOsA
https://hackmd.io/v4BrcYYPTfKSrJV3DeU0OA
https://github.com/linnil1/2019Multivariate/tree/master/final
https://github.com/linnil1/2019Multivariate/tree/master/finalexam/FinalExam.html