Zrelated
Zrelated is a term used in statistics and data science to describe a type of association between two variables after standardization to z-scores. The term is not widely standardized in formal literature but appears in software documentation and methodological discussions to emphasize analysis in standardized units.
Definition: Given variables X and Y with means mu_X, mu_Y and standard deviations sigma_X, sigma_Y, define Z_X
Origin and usage: The term is encountered in methodological notes and some software workflows that preprocess
Properties: If X and Y are perfectly linearly related, Zrelated is achieved with r = ±1 in z-space,
Applications: Preprocessing for machine learning, cross-variable comparisons, outlier-resilient visualization, and exploratory data analysis.
See also: Standardization, Z-score, Correlation, Spearman's rho, Principal component analysis.