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)
Listen to Prologue, August 29, 1968 on YouTube
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.
Showing latest 5 ratings for this track. | Show all 50 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| 01/13/2026 17:52 | alexandermause | 16,808 | 85/100 | |
| 12/15/2025 22:38 | Exist-en-ciel | 89,587 | 71/100 | |
| 11/20/2025 12:02 | plasmicmist | 7,586 | 91/100 | |
| 11/16/2025 20:07 | Johnnyo | 43,232 | 80/100 | |
| 09/22/2025 22:36 |  AAL2014 | 36,212 | 76/100 |
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 67.4/100, a mean average of 64.3/100, and a trimmed mean (excluding outliers) of 65.6/100. The standard deviation for this track is 18.2.
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