what is principal component analysis used for which factor is an independent variable in a multi-component analysis? what is the principal component of regression testing which factor is not selected in principal component regression analysis? what is pca in regression analysis what factor scores are independent variables in multiple regression analysis what is principal component regression using spss which factor is considered an independent variable in a multiple regression analysis of spss? what is principal component regression analysis when pca is used in spss why is it important to do pca spss mlr how to find eigenvalue how to find multicollinearity in multiple regression what is principal component regression used for what is ppa in regression analysis what type of data is pca why is principal component regression used how do i find the eigen value of each individual variable in a principal component regression analysis? what type of analysis is pca which factor can only be selected as an independent variable in mlr