Estimating the IQ of Lex Fridman

According to his interview with Richard Haier, Lex Fridman got a perfect math SAT score and a decent reading score. Given that both me and Anatoly Karlin coincidentally have the same SAT score of 1510, I’ll just guess that’s his score too for shits and giggles. Using the same mean and SD that I used for Scott, that translates to a z-score of roughly 2.65.

He also has a PhD in computer science, which is roughly in the 97th percentile of educational attainment, which is an eduttainment z-score of 1.9.

Assuming correlations betwen SAT and IQ of 0.84 and one between edutainment and IQ of 0.55, this results in an estimate of 135 with a standard error of 7.5.

code:

g <- rnorm(60000000, mean=0)
iq <- 0.84*g + rnorm(60000000)*sqrt(1-0.84^2)
cs <- 0.55*g + rnorm(60000000)*sqrt(1-0.55^2)

subby1 <- data.frame(iq, cs)
subby1$g = g
subby2 <- subset(subby1, (subby1$iq > 2.55 & subby1$iq < 2.65) & (subby1$cs > 1.8 & subby1$cs < 2))
mean(subby2$g)
sd(subby2$g)