Öll Birtan (track)
by Björk
Öll Birtan appears on the following album(s) by Björk:
- Medúlla (track #5) (this album) (2004)
Upcoming concerts


Listen to Öll Birtan on YouTube
Öll Birtan ratings

where:
av = trimmed mean average rating an item has currently received.
n = number of ratings an item has currently received.
m = minimum number of ratings required for an item to appear in a 'top-rated' chart (currently 10).
AV = the site mean average rating.
Rating | Date updated | Member | Track ratings | Avg. track rating |
---|---|---|---|---|
85/100 ![]() | 08/31/2025 14:34 | ![]() | ![]() | 86/100 |
100/100 ![]() | 03/30/2024 19:38 | phmusic | ![]() | 100/100 |
75/100 ![]() | 10/11/2023 00:44 | Toroldo | ![]() | 86/100 |
50/100 ![]() | 09/26/2023 13:55 | SD100852 | ![]() | 77/100 |
80/100 ![]() | 08/09/2023 21:04 | brent13 | ![]() | 85/100 |
Rating metrics:
Outliers can be removed when calculating a mean average to dampen the effects of ratings outside the normal distribution. This figure is provided as the trimmed mean. A high standard deviation can be legitimate, but can sometimes indicate 'gaming' is occurring. Consider a simplified example* of an item receiving ratings of 100, 50, & 0. The mean average rating would be 50. However, ratings of 55, 50 & 45 could also result in the same average. The second average might be more trusted because there is more consensus around a particular rating (a lower deviation).
(*In practice, some tracks can have several thousand ratings)
This track has a Bayesian average rating of 74.6/100, a mean average of 74.4/100, and a trimmed mean (excluding outliers) of 74.4/100. The standard deviation for this track is 13.2.
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