All Questions
Tagged with wilcoxon-signed-rank sign-test
10
questions
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What test should I use for a unipolar ordinal rating-scale?
I am trying to analyze answers to 5-point unipolar rating items.
The possible answers can for instance be:
Not at all difficult, Slightly difficult, Moderately difficult, Very difficult, or Extremely ...
- 113
0
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0
answers
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I'm looking for a statistical test more robust than the sign test for my experimental analysis
I made an exploratory experiment that consists of a pair of readings. I used Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) to read elements on several mineral surfaces, getting ...
3
votes
1
answer
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Treatment of Ties in sign test (paired-samples sign test)
I'm curious about the validity of removing/ignoring ties when calculating the p-value for the sign test.
By ties I mean ($x_{before} = x_{after}$, where $x$ represents the measurement).
According ...
- 889
12
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1
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In what situation would Wilcoxon's Signed-Rank Test be preferable to either t-Test or Sign Test?
After some discussion (below), I now have a clearer picture of a focused question, so here is a revised question, though some of the comments might now seem unconnected with the original question.
It ...
- 775
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1
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What to do with a very big sample size? (effect size) [duplicate]
We have a peculiar problem, for which we have many questions, but cannot seem to find satisfactory answers (we did find a few ideas as to what to do, but we are not very certain they apply to our ...
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How to choose between sign test and Wilcoxon signed-rank test?
I am trying to pick one from these two tests to analyze paired data. Does anyone know any rules of thumb about which one to pick in general?
- 387
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336
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Test statistics in IR (t-test vs Wilcoxon vs signed test) [duplicate]
I have just read this paper about different test statistics one could use in Information Retrieval (IR), discussing whether Wilcoxon, Sign-test or Student t-test would be more reliable for comparing ...
- 205
2
votes
2
answers
317
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Scale of measurements in sign test and signed rank test
Can some one help me to understand the right scale of measurement to use in sign test as well as in signed rank test?
I read a certain book it says nominal scale is used in sign test while ordinal ...
0
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0
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Confused about the proper way of testing for an improvement or worsening
I want to check if a new equipment improves a score compared with the older equipment. My database contains the score with the old equipment, and the scores with each new equipment. I googled, userR'd,...
- 113
9
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1
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Alternative to the Wilcoxon test when the distribution isn't continuous?
One of the assumptions for using the Wilcoxon sign-rank test is that the underlying distribution is continuous (see here.)
However, there are cases (for example, when analyzing Likert scale data) ...
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