Happy Birthday (track)
by Joni Mitchell
Happy Birthday appears on the following album(s) by Joni Mitchell:
- Mingus (track #1) (this album) (1979)
Upcoming concerts
Listen to Happy Birthday on YouTube
Happy Birthday 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 |
|---|---|---|---|---|
| ! | 09/18/2025 12:59 |  Tamthebam | 44,325 | 79/100 |
| ! | 06/18/2025 02:59 |  AAL2014 | 34,469 | 76/100 |
| ! | 12/22/2024 03:07 | brent13 | 10,909 | 85/100 |
| ! | 12/02/2022 23:02 | mostlymor | 86,200 | 80/100 |
| ! | 04/23/2022 09:54 |  Jboy56 | 39,199 | 78/100 |
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 68.3/100, a mean average of 61.7/100, and a trimmed mean (excluding outliers) of 61.7/100. The standard deviation for this track is 25.2.
Happy Birthday comments
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