Meeting Videos
Cohort 1
Chapter Overview
Meeting chat log
00:07:45 LUCIO ENRIQUE CORNEJO RAMÍREZ: helloo everyone
00:11:11 Jon Harmon (jonthegeek): dslc.io/prob4ds
00:47:17 Jon Harmon (jonthegeek): [main 11:35:44] > X <- matrix(c(1, -2, 0, 3, 7, 1), nrow = 3, ncol = 2)
[main 11:39:48] > qr(X)
$qr
[,1] [,2]
[1,] -2.2360680 4.9193496
[2,] -0.8944272 -5.8991525
[3,] 0.0000000 0.1695159
$rank
[1] 2
$qraux
[1] 1.447214 1.985527
$pivot
[1] 1 2
attr(,"class")
[1] "qr"
00:53:20 Ronald Legere: prod( (n-(0:(k-1))). Will give permutations