All Questions
Tagged with multiple-comparisons kruskal-wallis-test
47
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Appropriate way to correct for multiple comparisons in this case
I am trying to compare the performance of an optimisation algorithm on different objective functions. The functions can vary in their form (4 different types) and dimension. I would like to first ...
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When to use an adjustment method for Kruskal-Wallis + Dunn's and which method?
I need to do multiple pairwise comparisons among 5 groups (Treatment 1, Treatment 2, Treatment 3, Positive Control, Negative Control) for different tests and times. Each group has $10$ individuals, ...
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I'm struggling to find which is the right statistical test to use?
I have two variables: cell death and diet, but on the diet variable I have several groups that I want to compare. I was thinking of doing multiple Mann-Whitney tests, but that would be very time ...
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47
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Kruskal wallis and posthoc test verification?
I am trying to run a kruskal-wallis test on my dataset.
Dataset is given below:
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137
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Adjusting for multiple comparisons after Kruskal-Wallis
I am comparing biomarker levels (50 total) obtained from immunoassay in a cohort divided into 3 groups (control vs. inactive vs. active).
I want to use the Kruskal-Wallis test with Dunn’s test to ...
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132
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Kruskal-Wallis multiple testing - correction alpha
I have 10 numeric outcomes in one dataset and I want to use Kruskal-Wallis test to identify an influence via a predictor variable (group variable) and also for each age group.
I am testing for each ...
fskh94
3
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1
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210
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Kruskal-Wallis returns only one significant group (out of 4 groups), when significant group is removed and test redone, another group is significant?
I am comparing 4 groups of samples using SPSS. The groups are 4 bathymetry groups (>0m, >-1m, >-2m, >-3m). Within each group are a number of samples n. Each sample has a recorded seagrass ...
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299
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Should we stop to use kruskal function of agricolae package for post-hoc (multiple comparisons) tests?
Lot of people use the kruskal function of the agricolae package (R) to make multiple comparisons.
If they do so, it means that ...
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How to do pairwise comparisons for Kruskal Wallis test?
If the null hypothesis in the Kruskal Wallis test is rejected, How can we perform pairwise comparisons? Can we apply Dunnett's Test for that?
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47
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How can I correct for multiple comparisons in two-way non-normal data (without using Bonferroni)
I'm struggling to carry out statistical analysis on my cell viability assay. The assay is widely used (it's called resazurin or alamarBlue assay), but I don't think it is analysed correctly in the ...
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762
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showing significance of gender differences in control vs treatment groups
I have 4 groups with independent samples :
Female Control
Female Treatment
Male Control
Male Treatment
When I compare Control to Treatment within the same sex, I find that Female Control to Female ...
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Is it appropriate to remove biologically meaningless pairwise comparisons after Dunn test for a post-hoc(FDR) analysis for multiple comparisons? [duplicate]
I have four individual groups(A, B, C, & D)
Differences between the groups are being analyzed by the Kruskal-Wallis test followed by Dunn's test for multiple comparisons (dunnTest command in R). ...
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27
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How to convert my output into a suitable table for ANOVA or Kruskwallis testing on SPSS?
Let's say I have asked an individual to classify images according to 3 fruits that he sees : apple, banana and kiwi. Then, I want to assess whether there are significant differences between the ...
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2k
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How do I interpret the p-value in a Dunn-test?
I conducted a Kruskal Wallis test for my sample sizes, and this is what I got:
Kruskal-Wallis chi-squared = 12.138, df = 4, p-value = 0.01635
The p-value is below 0.05, so I know there is a ...
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Which pairwise comparison tests are best to use after the Kruskal-Wallis test (Dunn, Conover-Iman or Steel-Dwass-Critchlow-Fligner test)?
I have 3 sampling sites where I took 3 water samples in each site. I chose to do the Kruskal-Wallis test to find out if there is a significant difference in total nitrogen between the sites. I did not ...
