Poll-what countries use Delphi?

[GMeyer]

Originally Posted by sdangelo

I'll do the statistics!

First off, we have to assume that the responses were a random sample of ChiefDelphi users. In reality, they almost certainly weren't--this was a voluntary response survey, which are usually terrible at imitating randomness (for example, maybe non-US members would be more inclined to answer because they want to represent their country). But for the sake of calculations, we'll pretend that it is.

The FRC 2015 season facts flyer says that 87.2% of FRC teams last year were in the US. To use this as our percentage of ChiefDelphi members who theoretically would live in the US, we need to assume that there is no difference in the average team size between the US and the rest of the world, all ChiefDelphi members are FRC members , and the percentage of teams in the US hasn't changed since last year.

I'm starting to question my initial readings of the results, but I'm still not totally sold on this yet. Don't all of those assumptions sound like pretty big assumptions to make?

[sdangelo]

Originally Posted by GMeyer

I'm starting to question my initial readings of the results, but I'm still not totally sold on this yet. Don't all of those assumptions sound like pretty big assumptions to make?

Of course, that's why I pointed them out; I wanted anybody reading to take the results with a grain of salt. Unfortunately, these kinds of problems are much harder to fix than the sample size--which was actually more than large enough.

[Cabey4]

maybe non-US members would be more inclined to answer because they want to represent their country.

I think that that is definitely true. I know that that's why I'm here