Timeline for Exchangeability of group effects
Current License: CC BY-SA 4.0
4 events
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| Jan 3, 2019 at 22:30 | history | edited | kjetil b halvorsen♦ | CC BY-SA 4.0 |
added 582 characters in body
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| Jun 29, 2018 at 12:29 | vote | accept | suckrates | ||
| Jun 29, 2018 at 12:04 | comment | added | suckrates | I am familiar with exchangeable random variables and with the common examples that you cite, but something just isn't clicking. With the Wikipedia definition and three schools, what does it mean that the probability of observing $(U_{01}=A, U_{02}=A, U_{03}=B)$ is the same as the probability of $(U_{01} =B, U_{02} =A, U_{03}=A)$? That there is no "natural order" to our sample of schools, in the sense that time series or spatial data have a natural order? Ok, but then what kind of groups DO have a natural order? You mentioned groups selected for ability, but I'm not sure what you mean. Thanks. | |
| Jun 29, 2018 at 11:20 | history | answered | kjetil b halvorsen♦ | CC BY-SA 4.0 |