query: Is normality test required for original data prior to the principal component analysis?
positive_passages.docid: 21224
positive_passages.text: Applying PCA to data that fail a normality test
negative_passages.docid: 131097
negative_passages.text: Checking residuals for normality in generalised linear models
negative_passages.docid: 154757
negative_passages.text: One component in PCA is always the mean vector in two-dimensions but not three
negative_passages.docid: 19626
negative_passages.text: Is normality testing 'essentially useless'?
negative_passages.docid: 39839
negative_passages.text: Doing principal component analysis or factor analysis on binary data
negative_passages.docid: 73996
negative_passages.text: Does assumption of normality of each mixture components implies that each margins is normal
negative_passages.docid: 91753
negative_passages.text: t-test or z-test: assume normality or s≈σ?
negative_passages.docid: 21049
negative_passages.text: Why would all the tests for normality reject the null hypothesis?
negative_passages.docid: 10466
negative_passages.text: Making sense of principal component analysis, eigenvectors & eigenvalues
negative_passages.docid: 152420
negative_passages.text: Robust PCA vs. robust Mahalanobis distance for outlier detection
negative_passages.docid: 26181
negative_passages.text: Using principal component analysis (PCA) for feature selection
negative_passages.docid: 11124
negative_passages.text: Normality of residuals vs sample data; what about t-tests?
negative_passages.docid: 79786
negative_passages.text: How would PCA help with a k-means clustering analysis?
negative_passages.docid: 74282
negative_passages.text: Can I use PCA (or should I use regression) for testing the effect of multiple variables on one dependent variable?
negative_passages.docid: 156166
negative_passages.text: PCA of non-Gaussian data
negative_passages.docid: 112134
negative_passages.text: What are principal component scores?
negative_passages.docid: 114794
negative_passages.text: Is there any advantage of SVD over PCA?