Crash Course In Brain Surgery (track)
by Metallica
Year: 1987
From the album The $5.98 EP: Garage Days Re-Revisited (track #4)
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Crash Course In Brain Surgery appears on the following album(s) by Metallica:
- Garage Inc. (track #15) (1998)
- The $5.98 EP: Garage Days Re-Revisited (track #4) (this album) (1987)
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Crash Course In Brain Surgery 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 |
|---|---|---|---|---|
| ! | 06/06/2025 15:52 | stareaterogni0n | 2,766 | 73/100 |
| ! | 09/30/2024 05:36 | juanr1096 | 70,922 | 79/100 |
| ! | 02/16/2024 10:42 |  doombringer | 12,163 | 75/100 |
| ! | 07/24/2023 17:14 | OrionHCCA | 14,582 | 70/100 |
| ! | 04/02/2023 18:51 | Fevernova | 34,263 | 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 73.6/100, a mean average of 67.3/100, and a trimmed mean (excluding outliers) of 71.8/100. The standard deviation for this track is 20.4.
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