Nothing That I Didn't Know (track)
by Procol Harum
Nothing That I Didn't Know appears on the following album(s) by Procol Harum:
- Home (track #4) (this album) (1970)
- 30th Anniversary Anthology (track #30) (compilation) (1998)

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Nothing That I Didn't Know 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).
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Showing latest 5 ratings for this track. | Show all 14 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| ! | 02/19/2026 22:17 | 76,245 | 68/100 | |
| ! | 01/06/2026 10:28 | Exist-en-ciel | 169,541 | 71/100 |
| ! | 01/03/2024 16:49 | 27,262 | 73/100 | |
| ! | 09/16/2023 06:51 | mostlymor | 88,676 | 80/100 |
| ! | 01/18/2023 03:00 | bonnequestion | 17,069 | 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 77.0/100, a mean average of 77.9/100, and a trimmed mean (excluding outliers) of 77.9/100. The standard deviation for this track is 4.9.
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One of those lovely plodding slow numbers that PH do so well. The soft paino makes this track.