what is pca analysis used for pca definition and example what is pca data pca definition math what is pca technique what is the principal components of the pca what is principal component analysis used for why do you use principal components in math why is principal component analysis important what is pca data why principal component analysis do not work how does pca work which technique is used to reduce pca why use the principal component analysis technique what is a pca and how is it used? what is principal component analysis pca is used to reduce what data pca measures what is the main purpose of pca can pca be used for discrimination