Blue Magic (track)
by Jay-Z
Blue Magic appears on the following album(s) by Jay-Z:
- American Gangster (track #14) (this album) (2007)
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Blue Magic 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 20 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 18 hours ago | Exist-en-ciel | 163,827 | 71/100 |
| ! | 06/29/2026 00:23 | juanr1096 | 72,505 | 79/100 |
| ! | 03/30/2024 14:05 | phmusic | 68,979 | 100/100 |
| ! | 03/23/2024 18:42 |  DommeDamian | 74,839 | 51/100 |
| ! | 02/27/2023 21:08 | dougcummings | 23,544 | 69/100 |
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 72.4/100, a mean average of 67.3/100, and a trimmed mean (excluding outliers) of 70.5/100. The standard deviation for this track is 20.6.
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