River Sampling

People who are willing to be members of panels differ in many ways from people who aren’t. This too lessens the representativeness of panel research. For instance, in a recent CASRO webinar, NPD Group reported that 70% of their panel members are introverted, compared...

Sample Matching

One of the “magic” techniques for improvement representativeness is sample matching. The easiest way to think of sample matching is that is quota sampling on steroids. Now you are not trying to fill a cell of 50 respondents who are women aged 55+; you are trying to...

Quota Sampling

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...

Sports Superstitions: Classification

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”...

Sports Superstitions: Down the Rabbit Hole

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...