what is principal component analysis how to get the data of an r dataset to the old data what is principal component analysis how to get back an existing data set how to get data back from data sets how to get principal component data back what is principal components analysis in r what is principal component analysis which statement would you use to tell if principal component analysis is correct what is principal components analysis used for why do we change the data in the princomp function what is principal component analysis how can you get principal analysis results from the old data how do you get an old dataset back from principal components analysis how to get data back in r can you transform data back to old data in r do you have to retransform an r dataset? what is principal components analysis what is principal component analysis can principal components be changed to the original dataset?