writersoul,
I don’t think we are really disagreeing. My point was only that for something very well known for which there are widespread (not just personal) anecdotal reports from all over (not just in one’s immediate vicinity) statistical claims to the contrary will be disregarded as faulty or fraudulent.
If someone would try to publish a study saying that most chickens can live without heads for a week, that study would be rejected without anyone checking the work in the study. It would be rejected because the conclusion is ridiculous in light of the overwhelming anecdotal evidence to the contrary.
If someone were to try and publish a study saying that the average frum but not chassidish girl had as many dates as the average frum but not chassidish boy, I would reject that study as faulty or fraudulent.