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The document discusses statistical analysis of compositional data and presents two examples. It introduces the concept of compositional data being analyzed on a simplex rather than in real space due to certain limitations of Euclidean geometry. Some key operations and metrics for the simplex are defined, including perturbation, powering, the Aitchison distance, and the center of gravity. The examples illustrate using these tools to test genetic hypotheses and confirm interpretations of rock sample variabili
- Author
- gonzalo_hb
- Language
- EN