Biplot of PC3 vs. PC4
Click PC3 vs. PC4 under Biplots.
This biplot is useful to reveal patterns in addition to that found in the biplot of PC1 vs. PC2. It is useful only when
1. Patterns have already found in the biplot of PC1 vs. PC2, and
2. PC3 and/or PC4 explain a sizable variation.