All Questions
5
questions
0
votes
0
answers
50
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A huge non-normal, heteroscedastic dataset with multiple groups. How to test?
I have a dataset with approximately 38,000 measurements of sizes of cysts from 64 kidneys from 5 different groups.
We have a hypothesis that the distribution of the sizes (small to huge) is different ...
- 101
2
votes
1
answer
8k
views
Fligner-Killeen test of homogeneity of variances interpretation
I have two samples that I want to verify that variances are equals in order to apply Wilcoxon rank sum test that assume that the variance are equals.
Here a boxplot
As you can see the variance ...
- 569
4
votes
0
answers
543
views
Multiple comparison of non-normal, heteroscedastic data. What test should I use?
I have a set of brain pathology data. These were obtained by counting certain parameters in the brain. Due to availability of human brains, the amount of cases vary a lot across the different groups ...
- 51
19
votes
2
answers
40k
views
How to run two-way ANOVA on data with neither normality nor equality of variance in R?
I am working on my master thesis at the moment and planned on running the statistics with SigmaPlot. However, after spending some time with my data I came to the conclusion that SigmaPlot might not be ...
- 191
7
votes
3
answers
1k
views
How to do factorial analysis for a non-normal and heteroscedastic data?
I designed a field experiment with 4 independent factors but data is not normal and heteroscedastic. Friedman test (agricolae package) from R only fits for rbd. Can anybody suggest how to analyze my ...
- 131