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Does SPSS Statistics compute tetrachoric correlation coefficients?



I have binary data and would like to compute tetrachoric correlation coefficients, but I don't see a way to do this in SPSS Statistics. Can these be done, aside from implementing formulas manually?

Resolving The Problem

SPSS Statistics currently does not have a procedure that will produce tetrachoric or polychoric correlations. However, there is an extension, SPSSINC_HETCOR, available from IBM developerWorks, that computes polychoric and polyserial correlations using an R package. Tetrachoric correlations are a special case of polychoric correlations applied to two binary variables. The extension requires the Python and R plugins. It is available from .

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Modified date:
16 April 2020