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They don't go out and canvass for phone numbers first. If they don't include cell phone numbers it's possible to bias more towards older persons, but that would
by mpyne 13y ago
They don't go out and canvass for phone numbers first. If they don't include cell phone numbers it's possible to bias more towards older persons, but that wouldn't invalidate the survey either.
- cinquemb 13y agoThe survey itself? Probably not. The conclusion most people are likely to draw from it and apply it overarchingly, that is what I question.