Nobody's Perfect (track)
by Jessie J
Year: 2011
From the album Who You Are (track #2)
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Nobody's Perfect appears on the following album(s) by Jessie J:
- Who You Are (track #2) (this album) (2011)
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Nobody's Perfect 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 3 ratings for this track. | Show all 11 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 01/08/2021 22:23 | azeri | 659 | 95/100 |
| ! | 12/10/2020 17:57 |  DommeDamian | 77,709 | 51/100 |
| ! | 12/03/2016 02:29 | juanr1096 | 72,498 | 79/100 |
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 70.2/100, a mean average of 65.0/100, and a trimmed mean (excluding outliers) of 65.0/100. The standard deviation for this track is 27.6.
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