Roll Call (track)
by Peter Murphy
Roll Call appears on the following album(s) by Peter Murphy:
- Deep (track #9) (this album) (1989)
- Wild Birds 1985-1995 (track #15) (compilation) (2000)
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Condition: Used
eBay
Condition: Very Good
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Roll Call 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 |
|---|---|---|---|---|
| ! | 03/22/2025 03:34 |  imacgill | 29,919 | 81/100 |
| ! | 10/10/2023 23:52 | matterhornrider | 22,498 | 86/100 |
| ! | 12/22/2022 11:25 | telegram | 746 | 96/100 |
| ! | 09/29/2021 14:15 | Alterblack | 2,678 | 82/100 |
| ! | 01/05/2021 21:43 | multiverso | 6,810 | 81/100 |
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 74.9/100, a mean average of 73.8/100, and a trimmed mean (excluding outliers) of 73.8/100. The standard deviation for this track is 14.7.
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