Book Of Days (track)
by Enya
Book Of Days appears on the following album(s) by Enya:
- Shepherd Moons (track #7) (this album) (1991)
- Paint The Sky With Stars: The Best Of Enya (track #3) (compilation) (1997)
- The Very Best Of Enya (track #5) (compilation) (2009)
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Book Of Days 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 18 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 05/26/2026 12:27 |  doombringer | 14,946 | 74/100 |
| ! | 04/08/2026 04:26 | Exist-en-ciel | 167,076 | 71/100 |
| ! | 10/21/2023 11:02 | LT22 | 2,742 | 86/100 |
| ! | 10/20/2023 07:43 | Luncea | 5,166 | 85/100 |
| ! | 09/23/2022 21:12 |  DJFresh-Rock | 1,459 | 83/100 |
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 15% of all tracks on BestEverAlbums.com. This track has a Bayesian average rating of 78.0/100, a mean average of 79.2/100, and a trimmed mean (excluding outliers) of 79.2/100. The standard deviation for this track is 17.3.
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