Birthday (track)
by Blur
Birthday appears on the following album(s) by Blur:
eBay
Condition: Very Good
eBay
Condition: New
eBay
Condition: New
Upcoming concerts
Listen to Birthday on YouTube
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.
Showing latest 5 ratings for this track. | Show all 74 ratings for this track.
| Rating | Date updated | Member | Track ratings | Avg. track rating |
|---|---|---|---|---|
| 02/11/2026 17:53 | daCritic | 35,150 | 76/100 | |
| 12/28/2025 10:21 | Siromynian | 16,231 | 70/100 | |
| 11/08/2025 09:06 | kinginsomniac12 | 5,498 | 100/100 | |
| 10/09/2025 03:10 |  imacgill | 31,118 | 81/100 | |
| 03/26/2025 03:21 | culwin | 20,956 | 75/100 |
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 77.2/100, a mean average of 76.8/100, and a trimmed mean (excluding outliers) of 77.3/100. The standard deviation for this track is 12.0.
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