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Factor Analysis (Eigenvalues & Scree Plot (show substantive importance…
Factor Analysis
Eigenvalues & Scree Plot
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Scree plot - determine the # of factors (point of inflexion, the # that comes before that point)
Communality
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variables <30, N>200, communality>=..60
the closer the communalities are to 1, the better the factors are at explaining the original data
Pupose
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reduce a data set to a more manageable size while retaining as much of the original information as possible
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Factor Loading
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very large samples, small loadings can be considered statistically meaningful (N=200, loading >..364)
Factor Rotation
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Purpose - achieving a simple structure, all factors are clearly distinct from one another
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