Unsure why this is downvoted. When averaging results over a whole city, you've eliminated most sources of noise. But if you average neighborhood by neighborhoo

Unsure why this is downvoted. When averaging results over a whole city, you've eliminated most sources of noise. But if you average neighborhood by neighborhood, then you have 20x smaller samples, and on top of that, 20x more chances to p-hack. So it's unsurprising to me that there exists some neighborhood where crime rates dropped significantly in one year. I think GP's comment would be stronger if they had given absolute numbers instead of "67% decrease".