Abstract
It is investigated which form of the Friedman test statistic is implemented in the statistical program packages BMDP, SAS, SPSS, and STATGRAPHICS. Special attention is focused on the handling of ties and whether a multiple comparison procedure (MCP) is available. As none of the considered software systems offer both, namely adjustment for ties and an MCP, two SAS/IML modules are proposed, which use the formula given by CONOVER (1980) for computing the Friedman test statistic with adjustment for ties and the sequentially rejective test procedure of HOLM (1979) for performing smultiple comparisons.
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