Questions tagged [friedman-test]
A non-parametric test for the equality of >2 dependent groups.
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questions with no upvoted or accepted answers
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All vs all post-hoc after Aligned Friedman (k classifiers over multiple datasets)
I have k classifiers and n datasets, and I have only one accuracy measurement (which is actually the average of three independent repetitions of the 5-fold-CV, i.e. average over 15 accuracy values) ...
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Friedman? Unequal samples sizes
my students were involved in three different simulations. I was asked them to rate their satisfaction with these simulations on a 5-point Likert scale (several items). Unfortunately, I have 60 ...
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Test analysis - repeated measures
I lack the experience and can't find an answer anywhere at the moment.
The situation is as follows:
I would like to test a new device measuring the heart rate of a patient. For this, I have observed ...
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2
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How to run Friedman test correctly across three sets of questionnaire data divided into sub-groups?
I am trying to evaluate the usability of three prototypes of an application and want to see if there is a significant difference in terms of usability.
For this I have collected responses from users ...
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How must the null hypothesis be rejected for Nemenyi test to be allowed?
Suppose we have algorithms $A_k$ and $B_k$, $1\leq k\leq n$, and $\alpha = 0.05$.
Friedman test for the algorithms $A_k$ shows that the null hypothesis that all $A_k$s perform equally well, can be ...
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Survey on how frequently a group use a particular device: Which analysis methods?
I surveyed a group of photographers and asked them how frequently they used a particular type of lens for a specific type of photograph. I now want to find out which lens or lenses are the most ...
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Many-to-one post-hoc comparisons after Friedman test
Is there any established technique (something like the Dunnet test) for performing many-to-one post-hoc comparisons after the Friedman rank test for repeated measures?
I would be also very grateful ...
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Friedman test for a repeated measures experiment with replicates
(Please see example with reproducible data at the end)
I have a data file with the results of an exercise performed 16 times
with each of 2 control devices by 3 subjects. I measured the task
...
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What Statistical test to use on my project?
I am very confused about what kind of statistical test to use in RStudio on my project,
I have measured the mean salinity for 3 levels of population density (low medium and high) across 6 months (...
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Alternative to Nemenyi posthoc test that can use variance
I am applying statistical tests from paper "Statistical Comparisons of Classifiers over Multiple Data Sets" J. Demsar (link) in my own work. However, variance is pretty important, since ...
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Is there any post-hoc test for multiple comparisons after conducting the Friedman test by two group using a preference ranking questionnaires?
I have this dataframe:
group1<- matrix(c(rep(1,5),rep(2,5),rep(3,5),rep(4,5)), ncol=4)
group2<- matrix(c(rep(4,5),rep(3,5),rep(2,5),rep(1,5)), ncol=4)
I ...
Javi
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Why is my Friedman posthoc test said to be "true" with a p value of 0.06?
I used the function friedman.test to test for differences between multiple conditions and then used friedmanmc as a posthoc test....
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Hypothesis Test for Ranked Preference?
I am conducting a survey where people are required to rank 3 different designs from 1st to 3rd. For example, there are 3 designs - A, B and C. Participants are required to rank them in order of ...
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Clustered data and the Friedman test
Good morning, I am performing a risk factor analysis of the individual and household-level factors associated with Plasmodium infection in individuals located in 8 villages in Cambodia.
I have ...
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Trouble interpreting Friedman Test for 3-way repeated measures ANOVA
I would like to use a Friedman Test as a non-parametric alternative to a 3-way ANOVA in RStudio. I would like to measure how 'cl_conc' (Response Variable) is affected by 'soil_type' (Fixed Effect #1 - ...
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