3 ms·
I have no reason to believe that students that ignored the survey the first time would respond to a second survey. There will always be non-respondants, it's j
by jandrese 4y ago
I have no reason to believe that students that ignored the survey the first time would respond to a second survey. There will always be non-respondants, it's just part of the domain. I'd vote for sending out 120 more surveys simply because 120 is a very small sample size to begin with.
- pjscott 4y agoThere’s always a risk that if you increase sample size without addressing selection bias, you’ll just end up with more confidence in an incorrect conclusion. (“Dewey defeats Truman!”)