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...uot;single" : (list) object can not be altered into 'double'. Can somebody tell me what is going wrong with my code? Many thanks in advance. B. ----- The art of living is more like wrestling than dancing. (Marcus Aurelius) -- View this message in context: http://www.nabble.com/Sperman-Correlation-with-rcorr-%28Hmisc%29-tp18758029p18758029.html Sent from the R help mailing list archive at Nabble.com.

Hi, Does anyone know if the cor() function under the stats package adjusts for ties? Specifically, with method="spearman" does R compute the ties adjusted version of Sperman's rank correlation coefficient or the uncorrected version? If not, does anyone know of a function/package that will do this? Thanks! Courtney M.