FactorGuard is a user-friendly statistical visualization tool for researchers in healthcare, psychology, and the social sciences, designed to help determine the optimal number of factors to retain in exploratory factor analysis (EFA) through parallel analysis. By comparing your data’s eigenvalues with those from simulated random datasets, it provides more reliable results than traditional rules like Kaiser’s criterion. The app features interactive scree plots, supports multiple data formats including CSV, Excel, SPSS, and Stata, and allows you to download publication-ready visualizations, making complex statistical decisions clearer and easier to communicate. Whether you are teaching, learning, or conducting advanced research, FactorGuard streamlines factor retention, helping you make accurate, transparent, and well-supported analytical choices.

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