Wilcoxon Sign Test Sas. It is in fact a non-paracontinuous level alternative to the dependent samples t-test. The Wilcoxon Sign test is a statistical comparison of the average of two dependent samples.
A Wilcoxon signed-ranks test indicated that participants who consumed glucose had significantly better recall M 762 Mdn 85 SD 369 than did subjects who consumed saccharine M 581 Mdn 6 SD 286 S N 16 535 p 004. It is in fact a non-paracontinuous level alternative to the dependent samples t-test. The Wilcoxon signed rank test is provided by PROC UNIVARIATE not PROC NPAR1WAY see documentation.
All three tests produce a test statistic for the null hypothesis that the mean or median is equal to a given value against the two-sided alternative that the mean or median is not equal to.
For the exact Wilcoxon test the one-sided p -value is 00527 and the two-sided p -value is 01054. Indeed you have to divide the resulting p-value by two in order to obtain the appropriate p-value for the one-sided test. PAIRED SAMPLES T. Nov 14 2015 Apparently the author of your book performed a one-sided Wilcoxon signed rank test hopefully with good reason whereas the p-value from PROC UNIVARIATE corresponds to a two-sided test.
