Timeline for If not a Poisson, then what distribution is this?
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Aug 31, 2013 at 20:15 | history | suggested | Comp_Warrior | CC BY-SA 3.0 |
Changed formatting
|
| Aug 31, 2013 at 19:07 | review | Suggested edits | |||
| S Aug 31, 2013 at 20:15 | |||||
| Feb 8, 2013 at 8:32 | comment | added | Richi W | you know best how to interpret your data. I just wanted to remind you that neg.bin. arises as a Poisson mixture (if $lmabda$ follows a Gamma-distribution. Thus one can interpret in a similar way as in the Poisson case. But I don't want to force you :). One more comment: if the subject can execute multiple actions in one time point: can't it be Compound Poisson/NegBin then? Please tell me if you want more remarks on that. | |
| Feb 7, 2013 at 23:00 | comment | added | Dcook | I don't think the concept of a Bernoulli trial applies in my case. There's no concept of success or failure; subjects either execute the action of interest or they don't. They don't try and fail. Therefore, the idea of a probability of success doesn't make sense. Unless the trial is a unit of time. But then there's nothing to prevent the subject from executing multiple actions in that time period. | |
| Feb 7, 2013 at 9:07 | comment | added | Richi W | Just one more remark for neg bin. In en.wikipedia.org/wiki/Negative_binomial_distribution you see the formula for mean and the variance and that $mean/variance = 1-p$. Such a $p$ would this make any sense? If not then there is even more evidence that neg bin is not a good model here (if we believe in the moment estimators). | |
| Feb 7, 2013 at 4:06 | comment | added | Dcook | @Richard, I tried negative binomial, and that didn't fit. Thanks for the suggestions though. Since I couldn't figure out what kind of distribution this was, I decided to ignore the distribution and go with a non-parametric test, the Mann-Whitney U test. | |
| Feb 6, 2013 at 20:42 | answer | added | Emil Friedman | timeline score: 2 | |
| Feb 1, 2013 at 11:51 | comment | added | Richi W | have you tried negative binomial already? Did this help? | |
| Feb 1, 2013 at 9:24 | answer | added | Sean | timeline score: 1 | |
| Jan 31, 2013 at 14:02 | answer | added | Scortchi♦ | timeline score: 4 | |
| Jan 31, 2013 at 10:17 | answer | added | Richi W | timeline score: 8 | |
| Jan 31, 2013 at 10:08 | history | tweeted | twitter.com/#!/StackStats/status/296922882678849538 | ||
| Jan 31, 2013 at 8:52 | answer | added | Spacedman | timeline score: 6 | |
| Jan 31, 2013 at 8:24 | history | edited | Dcook | CC BY-SA 3.0 |
added 9 characters in body
|
| Jan 31, 2013 at 8:16 | history | asked | Dcook | CC BY-SA 3.0 |