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Example that I remember getting pointed out on HN a while back https://www.google.com/amp/s/amp.reddit.com/r/programming/comments/44kpzk/peter_norvig_being_goo

by pitt1980 8y ago

Example that I remember getting pointed out on HN a while back https://www.google.com/amp/s/amp.reddit.com/r/programming/comments/44kpzk/peter_norvig_being_good_at_programming/#ampf=undefined https://www.google.com/amp/s/amp.reddit.com/r/programming/co...

cperciva 8y ago
A couple more examples from higher education: Within the pool of enrolled students, language skills and quantitative skills are negatively correlated; and within the pool of students accepted by any law school, LSAT and GPA are negatively correlated.
- zimablue 8y ago
  Implication is that anything within a company that gets you hired that isn't A is negatively correlated to A I guess, which is pretty interesting. Looks, competence, workexp, interview skills, height, rich background, any positive discrimination, nepotism etc etc. All should be negatively correlated with eachother this. Although there are limits to the strength of the effect right, it depends on how much of a slice is being excluded and if the two variables have an enormous correlation that might outweigh it? You'd also expect the effect to be stronger the more selective the environment (for each pair of variables). So if your place hires very strongly on looks and competence they'll be very negatively correlated. Also it depends on the hiring policy, we're assuming some sort of (A+B) > C evaluation over things that they care about, but if it's (A>A0, B>B0, C>C0), pass all of those and you're in then this effect should be totally absent in those variables.
  - bkrn 8y ago
    Re: your final paragraph it seems like it could be a0 > A & b0 > B & ... if you're also trying to (or forced by the market to) minimize the sum of a0 + b0 ...
  - bloak 8y ago
    Of course some of those things might be positively correlated in the general population strongly enough that this Berkson's effect will only make them less positively correlated in the company.
feanaro 8y ago
Offtopic, but I'm really curious... What's with the AMP URL? I've noticed these started appearing recently, but I don't know where they're coming from. Did you grab an AMP URL on purpose or is it Google serving them somewhere and you didn't notice?
- goldenkey 8y ago
  He's probably on mobile. Google chrome on mobile loves to give AMP pages instead of normal ones.
  - feanaro 8y ago
    I didn't notice this, thanks. In that case, the AMP situation is worse than I thought.

cperciva 8y ago

A couple more examples from higher education: Within the pool of enrolled students, language skills and quantitative skills are negatively correlated; and within the pool of students accepted by any law school, LSAT and GPA are negatively correlated.

zimablue 8y ago
Implication is that anything within a company that gets you hired that isn't A is negatively correlated to A I guess, which is pretty interesting. Looks, competence, workexp, interview skills, height, rich background, any positive discrimination, nepotism etc etc. All should be negatively correlated with eachother this. Although there are limits to the strength of the effect right, it depends on how much of a slice is being excluded and if the two variables have an enormous correlation that might outweigh it? You'd also expect the effect to be stronger the more selective the environment (for each pair of variables). So if your place hires very strongly on looks and competence they'll be very negatively correlated. Also it depends on the hiring policy, we're assuming some sort of (A+B) > C evaluation over things that they care about, but if it's (A>A0, B>B0, C>C0), pass all of those and you're in then this effect should be totally absent in those variables.
- bkrn 8y ago
  Re: your final paragraph it seems like it could be a0 > A & b0 > B & ... if you're also trying to (or forced by the market to) minimize the sum of a0 + b0 ...
- bloak 8y ago
  Of course some of those things might be positively correlated in the general population strongly enough that this Berkson's effect will only make them less positively correlated in the company.

feanaro 8y ago

Offtopic, but I'm really curious... What's with the AMP URL? I've noticed these started appearing recently, but I don't know where they're coming from. Did you grab an AMP URL on purpose or is it Google serving them somewhere and you didn't notice?

goldenkey 8y ago
He's probably on mobile. Google chrome on mobile loves to give AMP pages instead of normal ones.
- feanaro 8y ago
  I didn't notice this, thanks. In that case, the AMP situation is worse than I thought.