U-Mass (track)
by Pixies
Year: 2004
From the album Wave Of Mutilation: Best Of Pixies (track #20)
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U-Mass appears on the following album(s) by Pixies:
- Trompe Le Monde (track #6) (1991)
- Wave Of Mutilation: Best Of Pixies (track #20) (this album) (compilation) (2004)
- Death To The Pixies (track #11) (compilation) (1997)
- Live At Coachella 2004/05/01 (track #2) (2010)
- Minotaur (track #56) (compilation) (2009)
- Live From Coachella 2004 (track #2) (2022)
- Bossanova / Trompe Le Monde - Live (track #20) (2025)
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U-Mass ratings
Average Rating = (n ÷ (n + m)) × av + (m ÷ (n + m)) × AVwhere:
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.
Showing latest 5 ratings for this track. | Show all 13 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 01/18/2021 21:56 |  adnielsen | 12,647 | 78/100 |
| ! | 09/23/2018 10:29 |  Purplepash | 35,414 | 76/100 |
| ! | 08/08/2018 23:33 |  pjohnsongolf | 5,334 | 82/100 |
| ! | 12/26/2017 05:03 |  Brad1770 | 19,981 | 64/100 |
| ! | 06/09/2017 04:00 | juanr1096 | 72,504 | 79/100 |
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 75.0/100, a mean average of 74.2/100, and a trimmed mean (excluding outliers) of 74.2/100. The standard deviation for this track is 24.7.
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