Introduction (track) by Chicago Transit Authority
Year: 1969
From the album Chicago Transit Authority (track #1)
Introduction appears on the following album(s) by Chicago Transit Authority:
- Chicago Transit Authority (track #1) (this album) (1969)
Price
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Condition: Very Good
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Condition: Good
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Condition: Brand New
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Introduction 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 |
|---|---|---|---|---|
70/100  | 06/04/2025 16:53 | machiaj | | 74/100 |
90/100 | 02/23/2025 16:12 | Pepeov | | 78/100 |
100/100 | 12/22/2024 21:43 | ErLollo | | 95/100 |
90/100 | 12/08/2024 03:41 | CokeBabies | | 84/100 |
45/100 | 08/06/2024 14:49 |  DommeDamian | | 51/100 |
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 is rated in the top 4% of all tracks on BestEverAlbums.com. This track has a Bayesian average rating of 81.1/100, a mean average of 80.7/100, and a trimmed mean (excluding outliers) of 81.9/100. The standard deviation for this track is 15.3.
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