which pca component is responsible for each individual variable's variance? can pca3d be used as an independent variable? how to determine independent variable pca3d pca component definition how to determine which variables to use for pca how to select pca components what is the role of the variable in pca which variable is responsible for the most significant part of the variance of each independent variable in the pca model? what is the purpose of the pca components how to distinguish components of a model pca3d how to find a metric how to construct the model pca3d how to find the pca of metabolic profiles how to find pca component which independent variable is responsible for determining that there are no two groups of participants in the same data set? which is an example of independent variable? which variable is used to separate the groups of interest in pca data? what is the metric for a model based on pca why does pca differ among groups of interest? when you select a component in pca, the percentage of variance is