Timeline for What do you expect a 2-sample t-test for the same two samples to return?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Jul 13, 2016 at 16:07 | vote | accept | under_the_sea_salad | ||
| Jul 13, 2016 at 16:07 | comment | added | under_the_sea_salad |
Got it. I think I will leave the nan in my program then.
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| Jul 13, 2016 at 16:06 | comment | added | Kodiologist | That's not what a $p$-value is; a $p$-value is the probability under the null hypothesis of getting a test statistic at least as extreme as the one you obtained. | |
| Jul 13, 2016 at 16:00 | comment | added | under_the_sea_salad | What about interpreting the p-value as the probability of rejecting the null hypothesis? Surely, I can say that two populations are the same if they have the same variance AND the same mean? | |
| Jul 13, 2016 at 15:57 | comment | added | Kodiologist | No. $t$ is undefined, so you don't have a $p$-value for this test. | |
| Jul 13, 2016 at 15:56 | comment | added | under_the_sea_salad | Is it correct to just say that the p-value in this case is 0? | |
| Jul 13, 2016 at 15:47 | history | answered | Kodiologist | CC BY-SA 3.0 |