30 Days (track) by Run-D.M.C.
30 Days appears on the following album(s) by Run-D.M.C.:
- Run-D.M.C. (track #8) (this album) (1984)
Price
eBay
Condition: Used
eBay
Condition: Used
Upcoming concerts
Listen to 30 Days on YouTube
30 Days 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 20 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
80/100  | 06/03/2023 22:41 | alexandermause | | 83/100 |
60/100 | 04/24/2023 07:00 | spinout | | 84/100 |
80/100 | 11/11/2022 19:34 | Fevernova | | 82/100 |
75/100 | 10/22/2022 16:30 | LosWochos | | 80/100 |
65/100 | 04/16/2022 21:12 |  AAL2014 | | 79/100 |
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 72.5/100, a mean average of 70.5/100, and a trimmed mean (excluding outliers) of 70.5/100. The standard deviation for this track is 11.5.
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