The Great Unknown (track) by Iron Maiden
Year: 2015
From the album The Book Of Souls (track #3)
The Great Unknown appears on the following album(s) by Iron Maiden:
- The Book Of Souls (track #3) (this album) (2015)
- The Book Of Souls: Live Chapter (track #9) (2017)
Price
eBay
Condition: Used
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The Great Unknown 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 |
|---|---|---|---|---|
70/100  | 07/17/2025 12:10 |  doombringer | | 76/100 |
60/100 | 10/24/2024 10:24 | Siromynian | | 71/100 |
100/100 | 04/25/2024 10:56 | phmusic | | 100/100 |
75/100 | 04/19/2023 13:19 | Fertu | | 82/100 |
75/100 | 11/08/2022 22:35 | mrmcrook | | 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 77.3/100, a mean average of 77.6/100, and a trimmed mean (excluding outliers) of 77.6/100. The standard deviation for this track is 11.4.
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