Purify (track)
by Metallica
Purify appears on the following album(s) by Metallica:
- St. Anger (track #10) (this album) (2003)
Upcoming concerts
Listen to Purify on YouTube
Purify 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 |
|---|---|---|---|---|
| ! | 09/07/2025 12:20 | ShenBapiro | 6,173 | 77/100 |
| ! | 08/06/2025 00:37 |  ExTeaSea | 12,134 | 86/100 |
| ! | 06/06/2025 19:39 | stareaterogni0n | 2,626 | 73/100 |
| ! | 02/25/2025 21:59 | daCritic | 33,667 | 76/100 |
| ! | 02/14/2025 12:30 | timosbuecherei | 3,138 | 60/100 |
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 52.2/100, a mean average of 48.3/100, and a trimmed mean (excluding outliers) of 48.3/100. The standard deviation for this track is 24.5.
Purify comments
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