Statistics How To

Statistics How To

Von Mises Fisher Distribution

Probability Distributions > The Von Mises Fisher Distribution (vMF) is an important isotropic distribution for directional data and statistics. “Directional” statistics are simply statistics that have direction as well as magnitude, like gene expression data, wind current directions or measurements…

Oversampling in Statistics

Sampling > Oversampling in Statistics In statistics, oversampling involves taking higher, disproportionate samples than would otherwise be collected with random sampling. Depending on the structure of the survey or poll, oversampling might result in bringing low numbers of an underrepresented…

Communality

Principal Component Analysis > In PCA and Factor Analysis, a variable’s communality is a useful measure for predicting the variable’s value. More specifically, it tells you what proportion of the variable’s variance is a result of either: The principal components…