Tag: eigenvalues

January 12, 2026 / Mohammed looti

SCREE PLOT

SCREE PLOT: Introduction and Definition The Scree plot stands as a fundamental graphical tool in multivariate statistics, specifically designed for applications involving dimensionality reduction techniques such as Principal Component Analysis (PCA) and Exploratory Factor Analysis (EFA). Fundamentally, it serves as a visual representation of the variance explained by each successive component or factor extracted from […]

October 22, 2025 / Mohammed looti

POSITIVE DEFINITE

Positive Definite Matrices in Quantitative Psychology The Core Definition of Positive Definite Matrices in Psychometrics The term Positive Definite Matrix is fundamentally a concept derived from linear algebra, defining a special category of square symmetric matrices where all of its eigenvalues are strictly positive. In the context of psychological research and quantitative methods—specifically within the […]