Mary Long (track)
by Deep Purple
Year: 1973
From the album Who Do We Think We Are (track #2)
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Mary Long appears on the following album(s) by Deep Purple:
- Who Do We Think We Are (track #2) (this album) (1973)
- The Essential Collection (track #5) (compilation) (1999)
- The Platinum Collection (track #26) (compilation) (2005)
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Condition: New
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Mary Long 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 |
|---|---|---|---|---|
| 01/01/2026 23:44 | Exist-en-ciel | 78,988 | 70/100 | |
| 11/02/2025 22:05 |  AAL2014 | 35,562 | 76/100 | |
| 09/16/2025 15:00 | steve397 | 5,095 | 74/100 | |
| 11/23/2024 16:19 | Siromynian | 16,044 | 71/100 | |
| 05/06/2024 02:24 | phmusic | 62,859 | 100/100 |
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 74.6/100, a mean average of 74.2/100, and a trimmed mean (excluding outliers) of 74.2/100. The standard deviation for this track is 13.4.
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