Questions tagged [sign-test]
Non-parametric test to compare two paired samples. Not to be confused with the [wilcoxon-signed-rank] test.
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Does the sign test only work on location families?
That is,
if $G$ is the distribution of the sample, what does it test:
\begin{align}
\mathcal H_0 : G(x) = F(x) && \mathcal H_1 : G(x) = F(x - \theta), \theta \neq 0
\end{align}
where $F$ is ...
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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 ...
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How does the Friedman test extend the sign test?
Every book/article claims this as if it's self-evident, but I have a hard time figuring out why. How do you get from the sum-of-squares style statistic of Friedman to the difference statistic involved ...
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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 ...
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Using paired t-test or Sign test to compare two groups of correlated measures on the same subject?
I have conducted a survey where participants are shown 8 different advertisements: 4 of the ads attempt to evoke the feeling of guilt, 4 others attempt to evoke the feeling of shame. After seeing each ...
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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 ...
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Which test to perform when checking for predicted vs actual sign of a relation between two variables?
I have been contemplating which test or statistic method to implement, in order to check that the variables I use throughout my analysis, actually have the predicted relationsship with the dependent ...
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What is the difference between a one sample t-test and sign test?
If I've conducted an experiment with only 10 samples and the data acquired have some wide gap in values, what would I use from the two statistical method.
Here are my values sample values:
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How to test to test if one model is better than another on independent dataset?
I have two models that make predictions on the same independent data set. I would like to make a test and find out if one model is statistically significantly better than another.
I've read that ...
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Kruskal wallis test for small dataset in R
I'm trying to test if there are systematic differences in a balanced data.frame composed by 25 observations of 3 variables:
...
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Paired sign test, when expected difference is not 50:50
I have a matrix of around 1000 species abundances from 40 sites e.g.
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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 ...
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Sign test for matched pairs that are non-integer
I have paired data as follows. These are proportion correct scores (ranging from 0 to 1) from multiple experiments in which Treatment X and Treatment Y were administered.
Treatment X: 0.25, 0.35, 0....
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Measuring magnitude of variation between 2 one-phase association exponential curves
I am currently testing the independence of two unpaired conditions A and B; with each condition representing a set of 12 values (aka bins) that compose a one-phase association exponential curve. Each ...
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