Timeline for How to do an ANOVA when your data are non-normal with possibly differing variances?
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| Mar 13, 2023 at 21:28 | history | edited | kjetil b halvorsen♦ |
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| Jan 13, 2018 at 15:32 | history | edited | kjetil b halvorsen♦ |
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| Jul 31, 2017 at 8:39 | history | edited | kjetil b halvorsen♦ |
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| Dec 3, 2015 at 20:15 | comment | added | Nick Cox | This is just to flag @kjetilbhalvorsen too. | |
| Dec 3, 2015 at 20:14 | comment | added | Nick Cox | As commented variously by kjetil and @gung, these data seem puzzling, as they are in some senses implausibly well behaved for counts. Is there some generating process that you are not telling us about? As a very wild guess, are they the number of organisms out of some total with a particular property? | |
| Dec 3, 2015 at 18:31 | history | edited | gung - Reinstate Monica | CC BY-SA 3.0 |
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| Dec 3, 2015 at 15:44 | history | edited | Nick Cox | CC BY-SA 3.0 |
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| Dec 3, 2015 at 15:42 | answer | added | Nick Cox | timeline score: 4 | |
| Dec 3, 2015 at 15:09 | answer | added | kjetil b halvorsen♦ | timeline score: 7 | |
| Dec 3, 2015 at 4:20 | answer | added | gung - Reinstate Monica | timeline score: 7 | |
| Dec 2, 2015 at 16:38 | comment | added | A. Romain | docs.google.com/a/eagles.usm.edu/spreadsheets/d/… | |
| Dec 2, 2015 at 16:33 | comment | added | kjetil b halvorsen♦ | The google docs you posted is protected, you need to post an open link (or I sent you a request for permission via google) | |
| Dec 2, 2015 at 16:30 | comment | added | A. Romain | I posted a link to the google docs of my values and groups. And I didn't want to use one way ANOVA since the data is not normal. I know ANOVA is robust, but with violating equal variances I did not wish to try it | |
| Dec 2, 2015 at 16:28 | history | edited | A. Romain | CC BY-SA 3.0 |
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| Dec 2, 2015 at 16:27 | comment | added | kjetil b halvorsen♦ | Can you post (as an edit to original post) a parallell boxplot of the 13 groups? That might be useful. You could use a version of one-way anova not assuming constant variance (like oneway.test in R), and you could combine that with bootstrapping. | |
| Dec 2, 2015 at 16:14 | comment | added | A. Romain | My sample sizes range from 21 to 70, so I have a decent amount of sample data. I am not familiar with box-cox and KWH is kruskal wallis H test | |
| Dec 2, 2015 at 15:05 | comment | added | kjetil b halvorsen♦ | What arew your sample sizes (in each group)? Can you post the data? Did you try box-cox transform? Can you spell out what is KWH test? | |
| Dec 2, 2015 at 14:43 | history | edited | A. Romain | CC BY-SA 3.0 |
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| Dec 2, 2015 at 14:36 | review | First posts | |||
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| Dec 2, 2015 at 14:33 | history | asked | A. Romain | CC BY-SA 3.0 |