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An outlier is an observation that appears to be unusual or not well described relative to a simple characterization of a dataset. A discomfiting possibility is that these data come from a different population than the one intended to be studied.

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Outliers and Linearity for EFA

As to fulfill the assumption for EFA, outliers and linearity need to be checked. Can anyone tells me what method/analysis is the best for identifying outliers and linearity? … For outliers, can I use Z-scores? …
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