Black Dahlia (track) by Porcupine Tree
Year: 2009
From the album The Incident (track #17)
Black Dahlia appears on the following album(s) by Porcupine Tree:
- The Incident (track #17) (this album) (2009)
- Pure Narcotic - Acoustic Session 2012 (track #1) (2020)
Upcoming concerts
Listen to Black Dahlia on YouTube
Black Dahlia 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  | 06/29/2025 15:32 |  ExTeaSea | | 86/100 |
100/100 | 05/08/2024 11:03 | phmusic | | 100/100 |
70/100 | 04/24/2024 12:53 | Pepeov | | 78/100 |
90/100 | 12/17/2023 11:43 |  charadeyouare | | 82/100 |
75/100 | 01/20/2023 12:10 | wizardalien | | 72/100 |
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 is rated in the top 5% of all tracks on BestEverAlbums.com. This track has a Bayesian average rating of 80.5/100, a mean average of 81.9/100, and a trimmed mean (excluding outliers) of 81.9/100. The standard deviation for this track is 8.9.
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