Mary, On The Wall (For Bette Jackson) (track)
by Grouper
Year: 2011
From the album A I A : Alien Observer (track #5)
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Mary, On The Wall (For Bette Jackson) appears on the following album(s) by Grouper:
- A I A : Alien Observer (track #5) (this album) (2011)
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Listen to Mary, On The Wall (For Bette Jackson) on YouTube
Mary, On The Wall (For Bette Jackson) 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.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 01/14/2026 13:19 | Exist-en-ciel | 78,552 | 70/100 |
| ! | 12/28/2024 02:49 |  AAL2014 | 35,510 | 76/100 |
| ! | 04/17/2022 23:20 | phmusic | 62,859 | 100/100 |
| ! | 11/24/2021 12:37 | Fertu | 40,982 | 82/100 |
| ! | 12/05/2020 17:02 | space22ify | 2,344 | 86/100 |
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 82.4/100, and a trimmed mean (excluding outliers) of 82.4/100. The standard deviation for this track is 12.8.
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