FX (track)
by Black Sabbath
Year: 1972
From the album Vol 4 (track #4)
Listen on Spotify
FX appears on the following album(s) by Black Sabbath:
- Vol 4 (track #4) (this album) (1972)
- Black Box: The Complete Original Black Sabbath (1970-1978) (track #28) (compilation) (2004)
- The Ten Year War (track #27) (compilation) (2017)
Price
eBay
Condition: Very Good
eBay
Condition: Brand New
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Listen to FX on YouTube
FX 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 |
|---|---|---|---|---|
50/100  | 08/08/2025 23:23 | FrancK | | 83/100 |
15/100 | 07/23/2025 13:13 | SD100852 | | 77/100 |
70/100 | 07/05/2025 04:42 | MrOlan | | 79/100 |
10/100 | 01/30/2025 11:46 | timosbuecherei | | 60/100 |
80/100 | 09/24/2024 07:08 | byuzak | | 78/100 |
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 63.3/100, a mean average of 62.0/100, and a trimmed mean (excluding outliers) of 62.0/100. The standard deviation for this track is 22.0.
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FX comments
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