[R] Wilcoxon test and grouping factor with multiple levels

[Iurie Malai]

Dear R users,

I have a dataset with two variables: $esan - a grouping factor with 8
levels and $reus. I'd like to do wilcox.test on this dataset as
sugested Weiwei here:
https://stat.ethz.ch/pipermail/r-help/2007-July/136627.html. I tried
to adapt his recommendation but no succes. Can anyone help me?


Regards,

Iurie Malai, Senior Lecturer
Department of Psychology
Faculty of Psychology and Special Education
Ion Creanga Moldova Pedagogical State University
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"esan"	"reus"
1	9.3
1	9.05
1	7.78
1	7.11
1	7.14
1	8.12
1	7.5
1	7.84
1	7.8
1	7.52
1	8.84
1	6.98
1	6.1
1	6.89
1	6.5
1	7.5
1	7.8
1	5.5
1	6.61
1	7.65
1	7.68
1	7.65
1	8.37
1	5.38
1	7.89
1	7.59
1	6.31
1	7.79
1	6.01
1	7.41
1	7.56
1	6.9
1	8.2
1	7.58
1	5.99
1	6.4
1	7.52
1	8.35
1	6.91
1	7.29
1	9.43
1	7.01
1	5.96
1	6.97
1	7.31
1	5.81
1	6.3
1	7.07
1	6.4
1	7.73
1	8.79
1	9.6
1	6.87
1	7.83
1	6.48
1	9.31
1	9.34
1	8.93
1	6.34
1	6.52
1	5.79
1	6.73
1	8.38
1	7.15
1	7.24
1	7.7
1	6.28
1	5.83
1	6.45
1	5.97
1	7.33
5	6.9
5	6.64
5	7.24
5	7.49
5	9.79
5	7.24
5	7.77
5	7.17
5	7.57
5	6.2
5	6.43
5	7.67
5	6.4
5	6.9
5	6.64
5	7.24
5	7.49
2	9.1
2	9.15
2	9.07
2	9.1
2	7.11
2	7.52
2	8.56
2	8.09
2	7.81
2	7.9
2	7.18
2	7.06
2	8.01
2	8.15
2	8.44
2	8.36
2	8.57
2	8.04
2	7.94
2	7.02
2	9.5
2	9.8
2	6.94
2	6.58
2	8.23
2	8.71
2	9.37
2	9.37
2	7.5
2	9.56
2	7.72
2	7.72
2	8.6
2	7.01
2	7.62
2	7.1
2	9.53
2	8.87
2	7.31
2	8.77
2	8.72
2	8.68
2	6.9
2	6.64
2	7.24
2	7.49
2	9.79
2	7.24
2	7.77
2	7.17
2	7.57
2	6.2
2	6.43
2	7.67
2	6.4
6	6.9
6	6.64
6	7.24
6	7.49
6	9.79
6	7.24
6	7.77
6	7.17
6	7.57
6	6.2
6	6.43
6	7.67
6	6.4
3	9.25
3	9.27
3	9.81
3	9.33
3	9.08
3	8.38
3	8.72
3	7.56
3	8.1
3	8.27
3	8.27
3	8.88
3	8.17
3	8.12
3	7.5
3	8.63
3	8.93
3	7.6
3	7.73
3	8.05
3	9.81
3	8.58
3	8.5
3	9.07
3	8.6
3	9.56
3	9.83
3	6.95
3	7.81
3	8.3
3	9.87
4	9.16
4	9.24
4	9.4
4	9.5
4	9.5
4	9.5
4	8.26
4	7.96
4	7.53
4	7.74
4	8.22
4	7.54
4	8.82
4	8.7
4	8.98
4	8.12
4	8
4	8.78
4	8.8
4	7.4
4	8.17
4	8.85
4	8.3
4	8.7
4	8.07
4	7.6
4	7.05
4	6.26
4	6.9
4	7.04
4	7.84
4	10
4	8.3
4	8.44
4	7.62
4	8.9
4	8.27
4	9.46
4	9
4	9.5
4	8.06
4	8.32
4	8.46
4	9.28
4	8.15
4	9.94
4	8.38
4	7.8
4	7.64
4	8.66
4	7.84
4	7.85
4	8.25
4	9.92
4	8.9
4	7.92
4	8.14
4	10
4	9.2
4	9.06
4	8.72
4	8.84
4	9.65
4	8.16
4	8.66
7	9.5
7	8.88
7	9.15
7	7.9
7	8.57
7	8.44
7	7.06
7	7.5
7	7.78
7	7.11
7	9.3
8	9.16
8	8.38
8	6.58
8	9.07
8	6.94
8	8.15
8	7.5
8	7.52
8	7.8
8	9.05
8	7.52