. "0"^^ . . . "105674474"@en-us . . . "106030196"^^ . "factor analysis"^^ . . . "any of several methods for reducing correlational data to a smaller number of dimensions or factors; beginning with a correlation matrix a small number of components or factors are extracted that are regarded as the basic variables that account for the interrelations observed in the data"@en-us . . . . . "0"^^ . . . "06030196-n"^^ . "factor analysis"@en-us . .