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| dFactors | EIGENVALUES VECTORS FROM THE LITTERATURE |
| nScree | NON GRAPHICAL CATTELL SCREE TEST |
| parallel | PARALLEL ANALYSIS OF A CORRELATION MATRIX |
| plotnScree | SCREE PLOT ACCORDING TO A nScree OBJECT CLASS |
| plotParallel | PLOT A PARRALLEL ANALYSIS CLASS OBJECT |
| plotuScree | PLOT OF THE USUAL CATTELL SCREE TEST |