useful
reduces the number of variables less the information of the original data set as ท่ี want the unification of the original lots to the same factors, which is considered a new variable,
Can create Factorscore which is the price of ตวั number เป็นตวั instead of a sample unit,  structure relationship of each variable and each factor, factorSolve the problem Multicollinearity for regression analysis can lead to such factors, statistical analysis, such as
    Regression. & correlation analysis - ANOVA and Discriminant analysis etc.
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