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Why is this analysis focused on the Baltics? That's p hacking, given that it happened to happen in the baltics. Let's instead say there are roughly 20 ocean re
by kqr 2y ago
Why is this analysis focused on the Baltics? That's p hacking, given that it happened to happen in the baltics.
Let's instead say there are roughly 20 ocean regions we would post hoc consider "the same". Now, given a breakage, what is the probability of at least two more in the same region and day? This is a Poisson distribution with lambda=200/365/20. The probability of two more independent breakages is 0.04 % for that specific day.
But again, picking a specific day would be p-hacking. Zooming out, an event that rare is expected to happen every seven years or so.
Now, "every seven years" is a far cry from "1 in 36 million." Whenever you get crazy p values like that, there is often an error or overlooked assumption in the analysis.
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If you like this sort of thing, have a stab at forecasting competitions! I can recommend the Metaculus Quarterly Cup. The current one is in full swing so use the remaining 1.5 months of the year to practice and then you're set for when the January edition starts.
- ValentinA23 2y agoI see, this was in fact what I had in mind. The maths I posted represent the horizon of my knowledge in probability and was surprised how well o1-preview was able to output correct numerical calculations. Having said that how would the odds look like if we factor in the fact the Baltic Sea is one of two zones with the most geopolitical tensions (along with Taiwan). --- Thanks for the Metaculus recommendation. I was a bit disappointed in the lack of maths in the comments in general. Can you recommend something in the vein of Leetcode with various degrees of difficulty, from very basic to advanced problems ? I'm both interested in probability and statistics
- kqr 2y agoSomething in thr vein of leetcode would be really useful to train people in forecasting, but given how subjective it is maybe difficult to pull off.