If it really was only 17 responses that's the equivalent of asking five people on the street if they like hot dogs and then deciding based on their answers to open up a laundromat in Brooklyn.
Using Clopper-Pearson at95% confidence tells us that between 23.3% and 70.8% would answer yes to this question. I do agree that is probably still too broad to decide to kill a business, but if you know you wanted a 60%+ (for example) positive response from this audience to hen that sample is enough to cause some serious worry.
http://www.google.com/insights/consumersurveys/view?survey=b...
There were only 2 responses from women earning $100-150k. A suburban woman answered 'No', an urban woman answered 'Yes'. The vast majority of the remaining surveys were filled in by women earning $25-49k, which isn't OP's target audience. However, most women earning <$75k answered 'Yes', so the market might be large enough after all. Maybe not for haute couture, but for reasonably good prêt-à-porter, sure.
i think the <20k are probably underage.
it's a catch22. when they are old enough to be their market, they are old enough to not want to mention age and body measurements.
We found Survata, an Y Combinator company, they helped us a lot and overdelivered :) - our project is still on standby / awaiting money, but the results Survata gave us were top notch and gave us several insights. We were looking for a much better confidence interval, so we had a screening question.
We also thought of using Mechanical Turk, but it's the wrong place for Rewire Attire.
I've toyed with some notions for better fits :) , mostly based around getting measurements through photos (android, webcams, whatever), and systems for that appear every so often on the news :) .
Edit: I'm not related to Survata in any way, just a happy customer.
Looking at all 444 women regardless of income, 56% said yes, and their income chart is far more even. And in the next income range, $75-$99k, 59%, or 13 of 22, said they WOULD give their measurements. Fun tool to play with however :)
I do agree though if you're right, that is incredibly insignificant data.