Prologue, August 29, 1968 (track)
by Chicago Transit Authority
Year: 1969
From the album Chicago Transit Authority (track #10)
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Prologue, August 29, 1968 appears on the following album(s) by Chicago Transit Authority:
- Chicago Transit Authority (track #10) (this album) (1969)
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Prologue, August 29, 1968 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.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 12/15/2025 22:38 | Exist-en-ciel | 52,349 | 71/100 |
| ! | 11/20/2025 12:02 | plasmicmist | 7,423 | 90/100 |
| ! | 11/16/2025 20:07 | Johnnyo | 42,038 | 80/100 |
| ! | 09/22/2025 22:36 |  AAL2014 | 35,044 | 76/100 |
| ! | 06/04/2025 16:59 | machiaj | 8,873 | 74/100 |
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 67.1/100, a mean average of 63.9/100, and a trimmed mean (excluding outliers) of 65.2/100. The standard deviation for this track is 18.2.
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