What is the average album rating?

Your welcome.

 

For those curious. these are the average ratings by subgenre (again, aprox).

 

the weighted average is taken into account the nr of ratings for an album, the normal average is counting every album as 1. of course the weighted average is more accurate, but as I can't compensate for the logarythm used to calculate the averages on this site it's still not perfect.

 

	nr albums with ratings	average rating	nr. ratings	weight adjusted average rating
Canterbury Scene	289	3,51	3558	3,83
Crossover Prog	840	3,29	8968	3,53
Eclectic Prog	982	3,43	12958	3,83
Experimental/Post Metal	221	3,58	3396	3,83
Heavy Prog	579	3,36	10645	3,75
Indo-Prog/Raga Rock	74	3,49	231	3,53
Italian Symphonic Prog	578	3,36	5817	3,80
Jazz Rock/Fusion	1402	3,58	7745	3,81
Krautrock	388	3,42	2675	3,69
Neo Progressive	846	3,39	9865	3,65
Post Rock/Math rock	269	3,38	1986	3,66
Prog Folk	800	3,48	6625	3,74
Prog Related	1145	3,24	10994	3,47
Progressive Electronic	626	3,19	2862	3,54
Progressive Metal	857	3,56	15237	3,83
Proto-Prog	329	3,29	3997	3,61
Psychedelic/Space Rock	936	3,43	10228	3,80
RIO/Avant-Prog	905	3,55	5502	3,82
Symphonic Prog	1735	3,37	31462	3,74
Tech/Extreme Prog Metal	353	3,52	4010	3,88
Zeuhl	126	3,84	1267	3,99
total albums with rating	14280
average rating	3,42
total nr of ratings	160028
average nr of ratings per album	11,21
nr of albums currently in Dbase	18107
nr albums without rating (aprox)	3827
weighted average rating	3,73

 

Nr of bands currently in Dbase          3599
Nr of bands used                                  3234

 

Naturally the weighted average is higher, as the more popular and higher regarded albums are far more often rated, so they weigh heavy on the average.