Commenter Vegan DHA asks, “Random, but what might be Tyler Perry‘s IQ? I guess something between 125 and 135.”

I’ve always liked Tyler Perry. I’ve never seen any of his movies but his Madea character looks hilarious so I think I would enjoy them. Perry’s childhood was a living hell; brutally beaten by his father and raped by men AND women (“so disgusting” he would later tell Oprah)

After a childhood of abuse, he entered high school but was kicked out, (though would later return for his GED) and was on track to become America’s worst nightmare: the big bad angry black man. Fortunately he turned on The Oprah Winfrey Show and was just blown away, to see someone who looked like him but had made it to the absolute top of America! He heard her say “if you write things down, it’s cathartic”. At the time he didn’t know what cathartic meant but he used his IQ to infer it was good and he began writing and never stopped. Still, making money as a playwright was no mean feat, and four years after being homeless (except for his car) he got to meet the woman who changed his life.

So what is his IQ?

We begin with the fact that as of 2023, Forbes estimated Perry had a net worth of $1 billion, making him the 4th or 5th richest black man of his generation. Given there are about 4.65 million black men in Generation X, that puts Perry around the one in a million level for this demographic. If there were a perfect correlation between IQ and money among black men, you’d expect Perry’s IQ to be 71 points above the U.S. black mean, but since the correlation is actually only 0.42 (somewhat lower than for white men), we’d expect him to be 71(0.42) above the black mean of 89 (U.S. norms);85 (white norms) giving Perry an expected IQ of 30 + 89 = 119 (U.S. norms).

However Perry is not just rich, he’s also tall. At a height of 196 cm, Perry is at least 3.06 standard deviations taller than the average black man of his generation. If there were a perfect correlation between IQ and height, we’d expect him to be 46 IQ points above the U.S. black mean, but since the correlation is only 0.25, his expected IQ is 46(0.25) + 89 = 101 (U.S. norms).

What happens when we put these two predictors together? Using math that a Promethean once explained to me, since the correlation between money and height is only 0.13, both variables maintain most of their predictive power:

Perry’s expected IQ = 0.37(Perry’s lifetime income ) + 0.22(Perry’s height)

Perry’s expected IQ = 0.37(+4.73 SD above the U.S. black male mean) + 0.22(+3.06 SD above the U.S. black male mean)

Perry’s expected IQ = 1.75 SD above the U.S. black male mean + 0.67 SD above the U.S. black male mean

Perry’s expected IQ = 2.42 SD above the U.S. black male mean

Perry’s expected IQ = 2.42(15) + 89 = 125 (U.S. norms)

So 125 would be my first guess for Perry’s IQ, but given that income is only moderately correlated with IQ and height is weakly correlated with IQ, the standard error around this estimate is quite large so think of it as just an educated guess.

Correct me if I’m wrong, but this is kind of a very simplified version of how chat GPT and machine learning in general works, but instead of using statistical predictors to guess IQs, chat GPT uses it to predict what humans would say when asked different questions.