1) In Linear Regression 2 (reg2-linearReg2.mov):
Correction at 9:45
2) In Probability / Estimation 3 (probEstimation3.mov):
Correction at 18:50
3) In PCA 3 (pca3.mov):
Correction at 13:20
3) In PCA 4 (pca4.mov):
Correction at 1:40