QUB | Archaeology and Palaeoecology | The 14Chrono Centre

Manual for psimpoll and pscomb

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Menu M: data analyses

Menu Md: principal components
Md.1 produces this submenu: 
Specify the matrix to use                        [3]
1 Linear correlation
2 Rank correlation
3 Covariance
Enter number <Enter>
Allows choice of basic matrix. Md.1.3 (covariance matrix) is the usual favourite, but the others work as well. Rank correlation is experimental: see any statistical text for how this differs from linear correlation.

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