Happy Birthday (track)
by Altered Images
Year: 1981
From the album Happy Birthday (track #8)
Listen on Spotify
Happy Birthday appears on the following album(s) by Altered Images:
- Happy Birthday (track #8) (this album) (1981)
- Reflected Images: The Best Of Altered Images (track #3) (compilation) (1996)
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Condition: Brand New
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Condition: Very Good
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Happy Birthday 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 |
|---|---|---|---|---|
| ! | 02/01/2025 10:59 |  doombringer | 11,881 | 75/100 |
| ! | 03/30/2024 05:59 | TradeShark | 4,948 | 30/100 |
| ! | 05/13/2023 20:42 |  dihansse | 66,492 | 76/100 |
| ! | 12/30/2022 03:15 | Phmus84 | 16,456 | 100/100 |
| ! | 09/15/2022 05:53 | LammyTS1 | 11,812 | 56/100 |
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 9% of all tracks on BestEverAlbums.com. This track has a Bayesian average rating of 79.2/100, a mean average of 75.8/100, and a trimmed mean (excluding outliers) of 81.7/100. The standard deviation for this track is 23.1.
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