All Questions
Tagged with nonparametric wilcoxon-signed-rank
37
questions with no upvoted or accepted answers
4
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0
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Minimum sample for non parametric test?
Exactly how many sample to be minimum size for non parametric test?
Right now i have 3 data with really2 small sample size
1. 5 pairs for wilcoxon signed rank test (pretest and postest in 1 place)
2. ...
- 41
3
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0
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2k
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Can I use wilcoxon signed rank test for time series data
I have a question about wilcoxon signed rank test. I have 2 different speed profiles (speed starts from time 0 to 100 sec) of the same participant that was given 2 different treatment. I would like to ...
- 31
2
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143
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One sample Wilcoxon Rank-Sum Test to compare percentiles
I have 10th, 25th, 50th, 75th and 90th percentiles of a population which is NOT normally distributed. On the other hand, I have a sample from that population and I want to test if its percentiles are ...
- 49
2
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341
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A nonparametric test for multivariate paired data? (i.e. multivariate version of wilcoxon signed-rank test?)
I have a set of datasets that have undergone 6 different pre-processing approaches prior to undergoing dimensionality reduction with two different algorithms, after which I score them for structure ...
- 21
2
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182
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Understanding a proof of the relation between Walsh averages and Wilcoxon signed rank test statistic
I am trying to understand a particular proof of the relation between Walsh averages and the Wilcoxon signed rank test statistic, as given in the book Statistical Inference Based on Ranks by T.P. ...
- 11.5k
2
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0
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35
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One-sample versions of the signed rank and rank sum tests?
I wonder if there are applications of the signed rank and rank sum tests in a one-sample context?
Signed rank
Is there a form of the signed rank test where the difference $A-B$ for each subject is ...
- 30.3k
2
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0
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350
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How do two of my Wilcoxon signed rank tests have the same p-values?
I'm running a statistical analysis where I'm comparing land surface temperature in matched equal sized areas (project areas and control areas) of different cities. In each city, I do it for two ...
- 21
2
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632
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Is Wilcoxon Test appropriate for paired categorical data?
There is currently a story in the news in the UK about negative effects of puberty blockers in children: 'It showed that after a year on puberty blockers, there was a significant increase found in ...
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2
votes
1
answer
100
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dependent T-test or Wilcoxons signed rank for small sample size?
I am doing an EEG study with a small sample size (N=13) and I have many variables that I need to compare (for example, onset of readiness potential, maximal point of RP, time or awareness, etc), so i ...
- 21
2
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0
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5k
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How to interpret rank-biserial correlation coefficients for Wilcoxon test?
I know that Pearson's $r$ correlation coefficient can be classified as follows (Wikipedia entry):
small size if $r \in [0.1, 0.3)$,
medium size if $r \in [0.3, 0.5)$
large size if $r \in [0.5, 1]$
I'...
- 1,099
2
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0
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674
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Wilcoxon-Mann-Whitney Output
I proposed a question early on infection rate data in 6 different hospitals for two years (N=12). After speaking with several people I decided that a Wilcoxon-Mann-Whitney (Mann-Whitney U, Wilcoxon ...
- 31
1
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0
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64
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I'm having trouble choosing between Wilcoxon matched pairs test and McNemar test for a data set
I have a data set on a large group of long-term stroke survivors. I need to determine whether there is a difference in ability (on a scale of 1-10) between their left and right arms. The ordinal data ...
1
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0
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134
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Alternative for Wilcoxon Test?
I'm ending my Master's Thesis, and I'm trying to figure out which test to use to calculate the significance of my data.
Basically, we measured the Free Kick biomechanical parameters of several ...
1
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0
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129
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Is 90% of the use of paired signed-rank Wilcoxon test incorrect due to violated distributional assumption of symmetry, or is it more general?
Everywhere, including forums - also this one, handbooks of statistical tests discussions, I can read that the paired Wilcoxon test does require the assumption of symmetry.
This would mean, that:
Most ...
- 11
1
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0
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248
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Wilcoxon signed-rank test for count-proportions?
Let's say that I have several agents able to take action A or B, and I am interested in showing that taking action A is more likely. So I have a table that looks something like
A
B
10
2
14
6
...
.....
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