We want to explore the tissue_gene_expression predictors by plotting them. We want to get an idea of which observations are close to each other, but the predictors are 500- dimensional so plotting is...

We want to explore the tissue_gene_expression predictors by plotting them.

We want to get an idea of which observations are close to each other, but the predictors are 500- dimensional so plotting is difficult. Plot the first two principal components with color representing tissue type.

We see an association with the first PC and the observation averages. Redo the PCA but only after removing the center.