Daily update | 01 March, 2022

Twitter

Reddit






StackExchange


Why Spearman's rank correlation ranges from from -1 to 1

Img missing!

Source: stats
Views: 291
Score: 6
Tags: mathematical-statistics correlation spearman-rho ranks


Law of Total Variance

Img missing!

Source: stats
Views: 29
Score: 3
Tags: r probability variance poisson-distribution gamma-distribution



Applying PCA to each group of features separately to use it in a predictive model

Img missing!

Source: stats
Views: 71
Score: 3
Tags: machine-learning pca predictive-models feature-selection


If a data set appears to be normal after some scaling is applied, is it really normal?

Img missing!

Source: stats
Views: 29
Score: 3
Tags: normality-assumption multidimensional-scaling

The End