Timeline for An average of averages problem, or two valid results?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 5, 2021 at 11:26 | comment | added | Oxbowerce | This difference is caused by the fact that there are users with a high number of days between logins with relatively few observations combined with the fact that the second method does not weigh the user average by the number of observations. | |
| Mar 5, 2021 at 11:22 | comment | added | brettmoreton | The question is "what is the average number of days between logins?". So i guess the first approach gives an answer for "all logins" regardless of who made them, and the second approach gives an answer for "logins for the average user". So perhaps there are 2 questions really, but i'm just surprised by the difference in the 2 answers (15.9 days vs 34 days) | |
| Mar 5, 2021 at 11:14 | history | answered | Oxbowerce | CC BY-SA 4.0 |