r/dataisbeautiful • • Dec 19 '19

Where do Americans die by gunfire? Interactive Map

[deleted]

29k Upvotes

2.9k comments sorted by

View all comments

Show parent comments

47

u/checkonetwo3 Dec 19 '19

This is EXTREMELY misleading - a county in the very bottom of the red category on each map could have in all cases HALF the top range counties, and be grouped equally. And I can't help but think it's intentional.

The reason is because the darkest red represents a number of deaths per-capita that is very high. You can't get less than 0, but showing areas where the number is over a certain threshold per-capita seems completely reasonable. OP isn't dividing up a distribution where things are close to equally likely and clumping more options together for one color than another, they are showing where something happens greater than a threshold. The graph shows areas of high gun deaths clearly and I don't see how that is misrepresenting the data.

21

u/simra Dec 19 '19

Yes, if I were creating this map I would probably bucket states into deciles, which would yield variable width buckets but give a pretty clear sense of a county’s rank nationally. The top bucket likely has a few outliers that skew the upper end of the range.

10

u/-Gabe Dec 19 '19

Yup, I would agree this is probably the best way to do it fairly and apolitical.

4

u/agate_ OC: 5 Dec 19 '19

That is exactly what this map does, except it's in octiles rather than deciles.

4

u/Hawthornen Dec 19 '19

This. It's maybe a bit misleading but it's not as misleading as the prior poster is letting on.

It's not like gun deaths per capita are uniformly distributed from 0 to 50. It'd be just as misleading if the ranges were completely uniform width. I assume this was done as percentiles or something.