All Questions
Tagged with wilcoxon-signed-rank median
13
questions
3
votes
1
answer
201
views
Why is the pseudomedian better than the median in a Wilcoxon test?
The wilcox.test function in R calculates the pseudomedian and a confidence interval when conf.int=TRUE.
In this question, ...
- 157
4
votes
1
answer
122
views
Creating a reference group to have equal sample sizes for Wilcoxon signed rank test
I am analyzing three years' worth of data. For some descriptive analysis, I want to know if there is a difference in the median between, $year_1$ and $year_2$ compared to $year_3$. To do this, I ...
- 75
3
votes
1
answer
939
views
Why is the upper bound of the 95% CI infinity when using a one sample wilcoxon?
I've been calculating 95% confidence intervals around the psuedomedian in a one sample wilcoxon signed rank tests, with a "greater" alternative and the mu = 0. That is, I have been exploring ...
- 41
1
vote
2
answers
795
views
Interpret the results of Wilcoxon signed rank test using mean ranks?
I have two dependent samples that I want to compare using the Wilcoxon signed rank test. I've now run into a problem with a few of my variables. The difference is significant so I want to know the ...
- 11
3
votes
1
answer
193
views
Is it appropriate to estimate the mean difference from a Wilcoxon p-value?
I am conducting a meta-analysis involving paired data (two instruments measuring the same thing). Original papers do not provide the standard deviation of the mean difference. One paper provides a p-...
- 53
0
votes
0
answers
150
views
Wilcoxon signed rank test - interpretation
I have 6 dependent variables that were measured on a 5 point Likert scale (treated as interval here). I want to test if their means differ significantly from the midpoint 3.
As the normality ...
- 13
3
votes
1
answer
304
views
Is my interpretation for Wilcoxon Signed Rank test correct?
I ran a wilcoxon signed rank test on paired samples where the outcome variable was a test score. The samples were paired by as siblings (younger and older sibling). I have a problem interpreting the ...
- 103
1
vote
1
answer
664
views
Pseudo median from Wilcoxon signed rank test larger than sample median?
I am left wondering, why I can be in a situation where the pseudo median (population estimator) of a Wilcoxon signed rank test, can be larger than the simple differences between sample medians? I am ...
- 279
1
vote
0
answers
72
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Wilcoxon rank signed test, paired or non-paired test?
I have been trying to figure out, whether or not I should use a paired or a non-paired test. My question comes from the fact, that I am trying to get the pseudo median, in order to say that SBP is [x] ...
- 279
2
votes
2
answers
864
views
Wilcoxon signed rank test, getting a numerical media difference instead of p-value?
I have been running the Wilcoxon signed rank test, where my output is a p-value. Now, the p-value interpretation I am confident in, but I read in a paper that the authors reported the:
The Wilcoxon ...
- 279
0
votes
0
answers
64
views
Paired Wilcoxon signed rank test-compare median
I have been comparing driving behavior before and after a technological intervention for a specific group of people. My data is far from normal hence I have used paired Wilcoxon signed rank test.
If ...
- 51
3
votes
1
answer
145
views
One-sample median test:: Signrank seems unsuitable
I have some data on successive bets made by customers. I want to see whether there is a statistically significant change in bet stake with each subsequent bet.
The data is skewed, so I have ...
- 265
2
votes
0
answers
15k
views
How to report results from Friedman's test including post-hoc results
I have performed comparison of repeated measures for a group using Friedman’s test (K-related-samples test) and additional post-hoc analysis with Wilcoxon signed-rank test and Bonferroni correction. I ...
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