To clarify, the previous post showing rudimentary science knowledge by sex and by race, while multiple choice, also permitted survey quiz-takers to choose “not sure”. The online version of the quiz did not contain this fifth possible choice (a by-product of which is the flattering of the online contingent when they see their results compared to the formal survey participants!). My apologies for not pointing that out.
The average (mean) percentage of “not sure” responses among survey quiz-takers was 17%. Cross-tabs by sex and race are not provided at the level of response to individual question so we cannot ascertain what percentage of correct responses were lucky guesses. Some surely were, but it must be fewer than 25%. An estimate of 8% is reasonable enough (25%-17%), so if the mileage is better by reducing scores by that amount, mentally note the adjustment.
As for the question of why post the results at all–is it anything more than dumping chum in the water?–the primary response is that empiricism, like knowledge, is good. Knowledge that is buried or otherwise suppressed by outlets that putatively exist for the purpose of informing the public is even better.
It’s also valuable as a riposte to the lazy and evil assertion that whites and men and especially white men are holding everyone else back by stealing all the knowledge for themselves.
These questions are easy to discover the correct answers to. Anyone with a passing curiosity in basic science should be able to answer them correctly if he devotes a little time to indulging his curiosity, something he and virtually every other person partaking in the survey–male or female, white or not–could have done for free from his cell phone at any time, from anywhere. That’s how I was able to ace the quiz, and I suspect that’s how you were able to as well. Nobody gave that process to you and you’re not keeping that process from being accessed by anyone else.