Search results with tag "The wilcoxon"
Statistics: 2.3 The Mann-Whitney U Test - statstutor
www.statstutor.ac.ukNote that the Mann-Whitney U test is statistically equivalent to the Wilcoxon rank sum test (not to be confused with the Wilcoxon signed rank sum test, which is for paired data). Example: The following data shows the age at diagnosis of type II diabetes in young adults. Is the age at diagnosis different for males and females? Males: 19 22 16 29 24
Use Software R to do Survival Analysis and Simulation. A ...
www.ms.uky.edutest. 2. Two or more sample log-rank test. To test if the two samples are coming from the same distribution or two di erent distributions. (power is best for proportional hazard/Lehmann alternatives.) The relevant R function is survdiff(). There is also an option for ‘rho’. Rho = 0 (default) gives the log-rank test, rho=1 gives the Wilcoxon ...
STATISTICAL TABLES - Transportation Research Board
onlinepubs.trb.orgTable C-8 (Continued) Quantiles of the Wilcoxon Signed Ranks Test Statistic For n larger t han 50, the pth quantile w p of the Wilcoxon signed ranked test statistic may be approximated by (1) ( 1)(21) pp424 nnnnn wx +++ == , wherex p is the p th quantile of a standard normal random variable, obtained from Table C-1.
The NPAR1WAY Procedure - SAS
support.sas.comThe WILCOXON option produces the output inFigure 83.2. PROC NPAR1WAY first provides a summary of the Wilcoxon scores for the analysis variable Gain by class level. For each level of the CLASS variable Dose, PROC NPAR1WAY displays the following information: number of observations, sum of the Wilcoxon
Wilcoxon Signed-Rank Tests - Statistical Software
ncss-wpengine.netdna-ssl.comPower Calculation for the Wilcoxon Signed-Rank Test The power calculation for the Wilcoxon signed-rank test is the same as that for the one-sample t-test except that an adjustment is made to the sample size based on an assumed data distribution as described in Al-Sunduqchi and Guenther (1990).