Why subtracting the means in PCA, but not dividing by standard deviations?
6316
PCA on correlation or covariance?
21159
Why are mean and median not equal for asymmetric distributions?
114794
Is there any advantage of SVD over PCA?
23841
Why is root mean square used when calculating average power, and not simply the average of voltage/current?
118103
Does PCA's reconstruction error get reduced with more PCs being used?
4819
Marginalising over standard deviation of normal to get the posterior on mean
100422
What is the difference between using the multiplication rule or using Venn diagram subtraction for probability?
112934
Is PCA followed by a rotation (such as varimax) still PCA?
84018
Why is there not a simpler way to calculate the standard deviation?
112134
What are principal component scores?
67557
Imputation of missing values for PCA
58541
What does standard deviation tell us in non-normal distribution
143679
Is the sign of principal components meaningless?
150004
Estimated standard deviation of difference between means in case of known and unknown variance?
127688
Example where convergence in mean does not imply convergence in quadratic mean
14465
"Normalizing" variables for SVD / PCA
21224
Applying PCA to data that fail a normality test