by Jeffrey Henning | Sep 27, 2016 | Blog
Given that effective sample size declines dramatically when the characteristics of the sample don’t approximate national representativeness, one method of improving non-probability sampling is quota sampling, dividing the sample into cells and recruiting to fill those...
by Jeffrey Henning | Sep 25, 2016 | Blog
We classified all respondents to our Sports Superstitions study as either “Unsuperstitious” or “Superstitious.” A respondent had to answer “Not at all paranoid”, “Not at all afraid”, and “Not at all fearful”...
by Jeffrey Henning | Sep 18, 2016 | Blog
We asked every respondent to rate their level of fear about how their actions at home might affect the team they are rooting for: while 21% of respondents are at least slightly paranoid, almost no respondents (3%) are very or completely paranoid. In qualitative...
by Jeffrey Henning | Sep 13, 2016 | Blog
Convenience sampling is almost the exact opposite of probability sampling: there is no sampling frame, there is no external random selection – anyone who comes across the survey can answer it. The results can be quite disproportionate to the target population:...
by Jeffrey Henning | Sep 8, 2016 | Blog
With the 2016-17 NFL season scheduled to start tonight, we thought we’d remind you to do your laundry – make sure your lucky jersey is ready! We asked fans who wear certain clothing to support their team about the type and condition of clothing that they...
by Jeffrey Henning | Sep 6, 2016 | Blog
A probability online panel selects candidates for participation through a probability sample (typically using Address Based Sampling) and then relentlessly invites candidates to join the panel. Panelists who lack Internet access are then provided computers or tablets...
