Note: actual test is 50 problems over 12 minutes, so ESPN is probably incorrect to give 5 minutes for 15 questions. Give yourself 3.6 minutes and multiply your score by 50/15 = 3.33 to get a Wonderlic score, W. Wikipedia estimates: (very roughly) IQ = 2*W + 60
ESPN: ...Each year, about 2.5 million job applicants, in every line of work, take the Wonderlic. The average NFL combiner scores about the same as the average applicant for any other job, a 21. A 20 indicates the test-taker has an IQ of 100, which is average.
Some people disagree with the whole idea of IQ testing because they believe the tests are culturally biased and inaccurate. But Charlie Wonderlic doesn't make grand claims for the score derived from his test. "What the score does is help match training methods with a player's ability," he says. "It could be a playbook -- what is the best way to teach a player a play? On the field, the higher the IQ, the greater the ability to understand and handle contingencies and make sound decisions on the fly."
Yes, we know painfully well how "discredited" IQ tests are. But, evidently, many employers and virtually all universities, not to mention NFL franchises, think that your IQ score has some predictive validity...
The diagram below illustrates how scores vary by position (created by Ben Fry). Note even the "brainy" O-lineman fall short of the average score for college graduates, 28. The overall US average is 21, implying 1 SD is something like 7 Wonderlic points, so the spread between halfback and left tackle is about 1.5 SD.
From Wonderlic.com: Every year, around the time of the NFL draft, there is a sudden surge of interest in the Wonderlic Personnel Test (WPT). The Dallas Cowboys first used the WPT for the selection of football players in the 1960’s. Today, it is one of the standard measures used by the combine and NFL teams when considering draft picks.
Although Wonderlic does not score the WPT for the combine, nor does it receive score reports, there are several sources that publish all of the draft statistics, including Wonderlic scores.
The average WPT score for player positions in the NFL are the same type of scores used by employers when hiring people for specific jobs. In his book Paul Zimmerman’s “The New Thinking man’s Guide to Pro Football,” Paul Zimmerman has published what he believes to be the average scores for NFL players by position.
NFL Position / Wonderlic Score / Job Title
Offensive Tackle / 26 / Marketing Executive
Center / 25 / Claims Examiner
Quarterback / 24 / Computer Operator
Tight End / 22 / Police Officer
Safety / 19 / Butcher
Middle Linebacker / 19 / Hospital Orderly
Cornerback / 18 / Machine Operator
Wide Receiver / 17 / Laboratory Assistant
Fullback / 17 / Dock Hand
Halfback / 16 / Material Handler
Of course, the average score by player position is a group statistic. An employer would use an individual player’s score to determine potential job success. As a point of reference, the average score across the United States is 21, while the average for college graduates is about 28.