Arch - learn how to calculate and analyse a PCA model

Task Create one or more models that can be used to decide if some arrowheads come from a particular stone quarry. Data ARCH2.XLS contains archaeological data where ten different elements have been determined in samples from four different quarries and arrowheads found in three different locations in California. The objective is to find out if the elemental composition can be used to classify the samples from the four quarries and thereby make it possible to determine the origin for the arrowheads; they had been found in different locations in California. If the arrowheads could be matched with the quarries conclusions about people movement could be made (the arrowhead must have been transported from the quarry to the location where it was found). You will find the data in ARCH2.XLS.

1. Open ARCH2.XLS 2. Calculate the model 3. Analyse the scoreplot 4. Analyse the loadingplot 5. Draw variables to get a feel for their correlation 6. Classify the arrowheads 7. Calculate a model for quarry A 8. Calculate a model for quarry B 9. Draw class distance 10. Save the document