Average Scores Across Beer Advocate, Untappd and RateBeer

@BeerBrewin posed an interesting question:  What's the average score across Beer Advocate, Untappd and RateBeer?  So I dug into the data a little bit, and here's what I found:

For beers where a score was retrieved from all three sites the scores were as follows:

Total beers with scores from all three sites:  3,483

Site	Average Score
Beer Advocate	86.5	(4.33)
Untappd	74.8	(3.74)
RateBeer	79.4	(3.97)

And if you account for all data, you can see it's pretty consistent:

Site	Average Score		Total Number of Scores
Beer Advocate	86.1	(4.31)	3808
Untappd	74.2	(3.71)	6755
RateBeer	77.5	(3.88)	5105

*** NOTE:  The above numbers only include beers that have been entered in beernumbeer, and are not even close to including the entirety of the above site's catalogs.