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You know what would be great if adapted by Goodreads?

Standard Deviation for ratings. I have a hunch that with the standard-deviation, all ratings for all books even out at 4/5. Not sure why, but I think that goodreads-users are too nice due to using real names.

Edit: Just played around with the "rating details" tab and numpy:

Magic for Beginners has a mean rating of 4.01 and a stddev of 0.99, Pirate Cinema has a mean rating of 3.85 and a stddev of 0.89, Pump Six has a mean rating of 4.11 and a stddev of 0.81, so looking at only the standard deviations, all books have a very similar rating. Interesting, but that doesn't tell me much, except that the standard-deviation is massive in this context.




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