So I’ve seen many threads about everyone’s anime mean score, but none about standard deviation, so I thought I’d be that stat nerd and propose it.

__Resources__
Basics of standard deviation
Find your standard deviation

on MALGraph.

Would post screenshots, but at work
1. Type in your username

2. Update your list if necessary (“Click to update” box above your profile picture). Might take a while if everyone does it :/

3. Click ‘Ratings’

4. It’s the third number to the right (Std dev)

**What’s your standard deviation? What would you expect the standard deviation of scores to be within the MAL community?** I’ll do a quick analysis of my own, so that hopefully this might make some more sense to those not familiar with statistics:

I have a standard deviation of 2.17 with a mean score of 5.88 and a population of 595 rated shows. Practically, this means roughly 68% of my anime (405 shows) falls within one standard deviation of my mean score, and 95% of my anime (565 shows) falls within two standard deviations of my mean score.

1 S.D. = 5.89 ± 2.17 = Scores between 3.72 and 8.06

2 S.D. = 5.89 ± (2.17 x 2) = Scores between 1.55 and 10.23

Of course this isn’t a perfect system to analyze anime scores, since we only use whole numbers on MAL and you’ve got a high possibility of going under 1 or over 10 once you get to 2 standard deviations (like I did), but hopefully we can gleam some interesting info from all this. For example, my standard deviation is probably higher than most, because I am pretty liberal about giving out 9s while also giving out quite a bit of low scores. That said, ~22% of my shows have a 6 score, which balances it out a bit. I wouldn’t be too surprised to find a handful of people with a higher deviation.

Overall, I’d estimate the average MAL standard deviation to be between 1.25 and 1.5. I’d also say deviations between 1 and 2 are reasonable and conductive to a good scoring system imho. Hopefully this interests more people than just me and at the very least gives somebody a small math lesson for the day.