[YouTube] Correlation measures are misused in the presence of nonlinearities

A VERY SIMPLIFIED TUTORIAL (VERY SHORT)
Correlation measures are misused in the presence of nonlinearities.

(How a measure of unintelligence can give the illusion of high correlation with performance.)

Correlation measures are not supposed to be used in the presence of nonlinearities. When 2 variables correlate half the time (in a symmetric way around the mean), correlation will not be 50% but will show ~90%. Part of debunking IQ studies. If IQ works for disabilities but does not correlate with success, there is an illusion of correlation because of the biases in the metric.

Nassim’s “IQ” Thread


“IQ” measures an inferior form of intelligence, stripped of 2nd order effects, meant to select paper shufflers, obedient IYIs. 1- When someone asks you a question in REAL LIFE, you focus first on “WHY is he asking me that?”, which slows down. (Fat Tony vs Dr John)

Link to Thread: https://twitter.com/nntaleb…