Till The World Ends (track)
by Britney Spears
Year: 2011
From the album Femme Fatale (track #1)
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Till The World Ends appears on the following album(s) by Britney Spears:
- Femme Fatale (track #1) (this album) (2011)
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Till The World Ends 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 27 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 07/31/2024 00:42 |  nitomano | 27,454 | 73/100 |
| ! | 07/06/2024 03:05 |  CassidyInc | 1,658 | 100/100 |
| ! | 02/14/2024 05:26 | LammyTS1 | 12,649 | 56/100 |
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 68.8/100, a mean average of 66.1/100, and a trimmed mean (excluding outliers) of 66.1/100. The standard deviation for this track is 27.0.
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