Purify (track)
by Metallica
Purify appears on the following album(s) by Metallica:
- St. Anger (track #10) (this album) (2003)
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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.
Showing latest 5 ratings for this track. | Show all 62 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 05/24/2026 01:29 | stareaterogni0n | 6,191 | 69/100 |
| ! | 04/01/2026 09:39 | 40,843 | 76/100 | |
| ! | 12/17/2025 15:12 | Exist-en-ciel | 169,532 | 71/100 |
| ! | 09/07/2025 12:20 | ShenBapiro | 6,173 | 77/100 |
| ! | 08/06/2025 00:37 | 13,135 | 85/100 |
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 52.4/100, a mean average of 48.6/100, and a trimmed mean (excluding outliers) of 48.6/100. The standard deviation for this track is 23.9.
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