Material World (track)
by Tracy Chapman
Material World appears on the following album(s) by Tracy Chapman:
- Crossroads (track #4) (this album) (1989)
Price
eBay
Condition: Used
eBay
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.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
80/100  | 08/17/2025 14:07 |  Igtonumama | | 81/100 |
65/100 | 06/18/2025 00:05 | machiaj | | 74/100 |
75/100 | 02/27/2025 09:11 | mostlymor | | 80/100 |
75/100 | 07/19/2024 05:29 | zsolti | | 80/100 |
80/100 | 04/12/2021 08:22 | spinout | | 83/100 |
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 76.1/100, a mean average of 75.9/100, and a trimmed mean (excluding outliers) of 75.9/100. The standard deviation for this track is 7.7.
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