Black Illusion (track)
by Ozzy Osbourne
Year: 2001
From the album Down To Earth (track #9)
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Black Illusion appears on the following album(s) by Ozzy Osbourne:
- Down To Earth (track #9) (this album) (2001)
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Condition: Very Good
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Condition: Very Good
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Black Illusion 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 |
|---|---|---|---|---|
| 11/08/2025 14:19 | spinout | 39,043 | 83/100 | |
| 07/23/2025 09:58 | LosWochos | 310,731 | 80/100 | |
| 06/28/2024 09:45 |  MetalMan67 | 754 | 84/100 | |
| 03/17/2024 13:51 | phmusic | 62,861 | 100/100 | |
| 09/15/2021 18:13 | Fevernova | 34,272 | 82/100 |
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 74.4/100, a mean average of 73.1/100, and a trimmed mean (excluding outliers) of 73.1/100. The standard deviation for this track is 14.6.
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