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On 18/01/2021 17:26, bharat rawlley via R-help wrote:
Hello,
On running the Wilcoxon Rank Sum test in R and SPSS, I am getting the following
discrepancies which I am unable to explain.
Q1 In the attached data set, I was trying to compare freq4w_n in those with
drug_code 0 vs 1. SPSS gives a P value 0.031 vs R gives a P value 0.001779.
The code I used in R is as follows -
wilcox.test(freq4w_n, drug_code, conf.int = T)
Q2 Similarly, in the same data set, when trying to compare PFD_n in those with
drug_code 0 vs 1, SPSS gives a P value 0.038 vs R gives a P value < 2.2e-16.
The code I used in R is as follows -
wilcox.test(PFD_n, drug_code, mu = 0, alternative = "two.sided", correct =
TRUE, paired = FALSE, conf.int = TRUE)
I have tried searching on Google and watching some Youtube tutorials, I cannot
find an answer, Any help will be really appreciated, Thank you!
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Michael
http://www.dewey.myzen.co.uk/home.html
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
