Material World (track) by Tracy Chapman
Material World appears on the following album(s) by Tracy Chapman:
- Crossroads (track #4) (this album) (1989)
Condition: Very Good
Condition: Used
Condition: Very Good
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Listen to Material World on YouTube
Material World 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.
Showing latest 5 ratings for this track. | Show all 12 ratings for this track.
Rating | Date updated | Member | Track ratings | Avg. track rating |
---|---|---|---|---|
04/12/2021 08:22 | spinout | 31,394 | 84/100 | |
11/07/2020 20:52 | ruiandr77 | 20,084 | 70/100 | |
09/19/2018 14:47 | nocturnaldelight | 8,418 | 60/100 | |
02/20/2018 14:10 | greatson | 12,615 | 71/100 | |
11/04/2017 17:29 | byuzak | 30,526 | 78/100 |
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 76.5/100, a mean average of 76.7/100, and a trimmed mean (excluding outliers) of 76.7/100. The standard deviation for this track is 8.2.
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