Gee. Everyone had every chance to input whatever they wanted.

I cannot think of a less biased examination.

Anyone who wanted could participate. The protocols are all done in plain site. Any other quiz/exam can/could be used.

Your analysis is erroneous.

It is biased in so many ways.

In your first sentence of your comment above you provide an excellent example of one.

First sentence - Gee.

2nd sentence - Everyone had every chance to input whatever they wanted.

3rd sentence - I cannot think of a less biased examination.

So, I'm guessing you meant 3rd. Show me a 3 minute, preliminary examination that reveals as much with less bias.

Also, realize the results are relative to the 15 people who took the quiz, not society at large.