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The signed sum was used to predict survival.
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The MoD's briefing when the first al-Yamamah deal [profile] was signed summed him up thus: "Lots of charm and dash; speaks excellent English... son of the minister of defence by a negress.
We performed Wilcoxon rank sum and signed rank sum tests using SAS version 9.1.
Non-parametric variables were compared using the Mann–Whitney rank sum test and the Wilcoxon signed rank sum test.
The Wilcoxon rank sum test was used for comparing means of continuous variables between two independent groups and Wilcoxon signed rank sum test for two dependent groups.
Wilcoxon signed rank sum test compared likelihood of participation with and without monetary incentives.
The order of frames within a group is guaranteed via the accumulated, signed hash sum.
Differences between pre- and post-test scores were analyzed using the Wilcoxon signed rank sum test paired by participant.
Null hypotheses of no difference (ratio 1.0) were evaluated separately for each time interval using the Wilcoxon matched-pairs signed rank sum test.
The Wilcoxon signed rank sum test with continuity correction was applied to compare the median 3D vector lengths of both groups.
The results were controlled with Wilcoxon signed rank sum test.
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