Certain Surprise (track)
by John Martyn
Certain Surprise appears on the following album(s) by John Martyn:
- One World (track #6) (this album) (1977)
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Certain Surprise 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 19 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 05/23/2026 09:19 |  Liedzeit | 10,759 | 77/100 |
| ! | 05/20/2026 01:32 | stareaterogni0n | 5,877 | 70/100 |
| ! | 04/08/2026 19:37 | Pluto11 | 28,736 | 75/100 |
| ! | 01/06/2026 13:51 | Exist-en-ciel | 168,060 | 71/100 |
| ! | 10/09/2023 17:39 | platus | 32,788 | 76/100 |
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 is rated in the top 19% of all tracks on BestEverAlbums.com. This track has a Bayesian average rating of 77.6/100, a mean average of 78.4/100, and a trimmed mean (excluding outliers) of 78.4/100. The standard deviation for this track is 15.4.
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