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Other / Dealing with outliers...
What I am seeing in my data:
-My QC's all cluster to the center of a PCA
- I have some samples located outside the Hotelling's T2 ellipse.
- Depending on how many PCA components I include in the DModX plot, I get different samples that are larger than the D-Crit value.
My questions:
- How should I decide on how many PCA components to include in the DModX?
- Should I remove all outliers detected by the DModX graph and the Hotelling's T2 plot from my data set to prevent skewing of my PCA/PLS?
- Is it possible that the outliers could be of interest and I should leave them in further analysis?
I really appreciate any and all advice!!!!