Shattered Glass (track)
by Britney Spears
Shattered Glass appears on the following album(s) by Britney Spears:
- Circus (track #5) (this album) (2008)
Upcoming concerts
Listen to Shattered Glass on YouTube
Shattered Glass 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 22 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| 08/21/2025 20:11 | SUPERJEFF6 | 6,605 | 89/100 | |
| 04/17/2024 22:39 | phmusic | 62,861 | 100/100 | |
| 02/13/2024 03:06 | LammyTS1 | 11,877 | 56/100 | |
| 02/27/2023 18:27 |  VictorVale | 43,279 | 88/100 | |
| 04/13/2020 14:23 | LosWochos | 311,058 | 80/100 |
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 66.0/100, a mean average of 61.4/100, and a trimmed mean (excluding outliers) of 61.4/100. The standard deviation for this track is 27.1.
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