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The Factor Problem
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adjustment arbitrary axis centroid method column sums communalities computed correlation coefficients corresponding cross product defined denoted described determined diagonal cells diagonal entries diagram dimensions direction cosines domain equation experimental factor analysis factor loadings factor pattern factor problem factorial methods factorial results formula functions given correlation matrix Hence hyperplanes intercorrelations interpretation involved L. L. Thurstone linear combination linearly independent matrix F measurements method of factoring multiple-factor analysis normal number of factors number of tests numerical values oblique factor matrix parameters plot population primary factors principal axes projections psychological raw scores reference axes reference frame relation represented rotation rotation of axes scalar product scientific second-order factor selection shown in Table simple structure Spearman's square standard scores summation test battery test configuration test scores test vectors tetrad theorem tion tors traits transformation trial vector unique unit rank unit vector unity vanish variables variance