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Poon, Wai-Yin; Wong, Yuen-Kwan – Structural Equation Modeling, 2004
This study uses a Cook's distance type diagnostic statistic to identify unusual observations in a data set that unduly influence the estimation of a covariance matrix. Similar to many other deletion-type diagnostic statistics, this proposed measure is susceptible to masking or swamping effect in the presence of several unusual observations. In…
Descriptors: Statistical Analysis, Data Analysis, Matrices