MAC OSX vs Win XP: Different stats test results!

Hi all,
I wondered whether anyone has some advice on a stats-related 'sanity check',
as I ran a nonparametric multivariate test (mulrank function as decribed by
R. Wilcox, 2005) on both systems, but got different results (please see
below for the system-specific outputs)! The functions I used are attached as
well. Any advice would be much appreciated! Thanks in advance for getting
back to me!

Best wishes,
Mareen
------------------------------------
Mac:

data03<-selby2(data02, c(1,2), 3)
mulrank(3,6,data03$x)

$test.stat
[1] 0.9331133

$nu1
[1] 11.46300

$p.value
         [,1]
[1,] 0.509296

$N
[1] 233

$q.hat
          [,1]      [,2]      [,3]      [,4]      [,5]      [,6]
[1,] 0.4940071 0.5256726 0.5176384 0.5476290 0.4690935 0.5265100
[2,] 0.5170627 0.4791950 0.5026431 0.4867843 0.4778865 0.5033497
[3,] 0.4680729 0.4944258 0.4889563 0.4505391 0.5311420 0.4726002

Win:

mulrank(3,6, data03$x)

$test.stat
[1] 1.114665

$nu1
[1] 8.155991

$p.value
          [,1]
[1,] 0.3491221

$N
[1] 233

$q.hat
          [,1]      [,2]      [,3]      [,4]      [,5]      [,6]
[1,] 0.4940071 0.5406417 0.5236837 0.5656338 0.4771799 0.5324505
[2,] 0.5162776 0.4801895 0.5022244 0.4960745 0.4854234 0.4820737
[3,] 0.5013608 0.4920967 0.4810269 0.4482885 0.5326861 0.4871506

http://www.nabble.com/file/p23595008/Rallfun-v92.txt Rallfun-v92.txt 

Hi all,
I wondered whether anyone has some advice on a stats-related 'sanity check',
as I ran a nonparametric multivariate test (mulrank function as decribed by
R. Wilcox, 2005) on both systems, but got different results (please see
below for the system-specific outputs)! The functions I used are attached as
well. Any advice would be much appreciated! Thanks in advance for getting
back to me!

Best wishes,
Mareen
------------------------------------
Mac:

data03<-selby2(data02, c(1,2), 3)
mulrank(3,6,data03$x)

$test.stat
[1] 0.9331133

$nu1
[1] 11.46300

$p.value
? ? ? ? [,1]
[1,] 0.509296

$N
[1] 233

$q.hat
? ? ? ? ?[,1] ? ? ?[,2] ? ? ?[,3] ? ? ?[,4] ? ? ?[,5] ? ? ?[,6]
[1,] 0.4940071 0.5256726 0.5176384 0.5476290 0.4690935 0.5265100
[2,] 0.5170627 0.4791950 0.5026431 0.4867843 0.4778865 0.5033497
[3,] 0.4680729 0.4944258 0.4889563 0.4505391 0.5311420 0.4726002

Win:

mulrank(3,6, data03$x)

$test.stat
[1] 1.114665

$nu1
[1] 8.155991

$p.value
? ? ? ? ?[,1]
[1,] 0.3491221

$N
[1] 233

$q.hat
? ? ? ? ?[,1] ? ? ?[,2] ? ? ?[,3] ? ? ?[,4] ? ? ?[,5] ? ? ?[,6]
[1,] 0.4940071 0.5406417 0.5236837 0.5656338 0.4771799 0.5324505
[2,] 0.5162776 0.4801895 0.5022244 0.4960745 0.4854234 0.4820737
[3,] 0.5013608 0.4920967 0.4810269 0.4482885 0.5326861 0.4871506

http://www.nabble.com/file/p23595008/Rallfun-v92.txt Rallfun-v92.txt

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Hello Peter,
thanks for your quick response - you have hinted into the right direction. I triple-checked my data and - how embarrassing - I actually did have different data matrices. Due to a faulty Win Excel macro that sorted data into groups after data collection, I ended up with different data in my 3 groups in the Win "test" ... All good now :-). Thanks again!

Best wishes,
Mareen