Roberta (track) by Billy Joel
Roberta appears on the following album(s) by Billy Joel:
- Streetlife Serenade (track #5) (this album) (1974)
Price
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Condition: Used
eBay
Condition: Very Good
eBay
Condition: Like New
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Roberta ratings
where:
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 |
|---|---|---|---|---|
60/100  | 08/01/2024 14:29 | Siromynian | | 71/100 |
35/100 | 03/21/2024 15:54 |  DommeDamian | | 52/100 |
100/100 | 03/18/2024 20:55 | phmusic | | 100/100 |
70/100 | 10/26/2023 02:34 | culwin | | 75/100 |
100/100 | 02/12/2023 20:48 | Phmus84 | | 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 74.7/100, a mean average of 72.7/100, and a trimmed mean (excluding outliers) of 74.1/100. The standard deviation for this track is 12.3.
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