Performs Kalman filtering and evaluate the likelihood function for the state‑space model.

Computes Kaplan‑Meier estimates of survival probabilities in stratified samples.

Computes and tests Kendall’s rank correlation coefficient.

Computes the frequency distribution of the total score in Kendall’s rank correlation coefficient.

Performs a K‑means (centroid) cluster analysis.

Maximum likelihood or least‑squares estimates for principle components from one or more matrices.

Performs a Kruskal‑Wallis test for identical population medians.

Performs a Kolmogorov‑Smirnov one‑sample test for continuous distributions.

Performs a Kolmogorov‑Smirnov two‑sample test.

Prints Kaplan‑Meier estimates of survival probabilities in stratified samples.

Performs a k‑sample trends test against ordered alternatives.