Just out of interest, what’s your prediction of the sample mean AQ for those responses to my survey that are submitted after I put the note at the top of the post asking only previous non-responders to respond, assuming I get more than, say, 5?
With that small a sample, I’m not sure. Merely adding the criteria, “Respond if you haven’t responded yet” seems unlikely to draw particularly different people. It will just draw more people with the same characteristic who didn’t already vote, if it draws anyone.
Just out of interest, what’s your prediction of the sample mean AQ for those responses to my survey that are submitted after I put the note at the top of the post asking only previous non-responders to respond, assuming I get more than, say, 5?
With that small a sample, I’m not sure. Merely adding the criteria, “Respond if you haven’t responded yet” seems unlikely to draw particularly different people. It will just draw more people with the same characteristic who didn’t already vote, if it draws anyone.