Photographs representing different landscape experiences were Q sorted by a non-random sample of both overseas and New Zealand visitors.
Field-assessed lakes generally are easily accessible and may represent a spatially irregular, non-random sample of a region.
This strategy generates a non-random sample that has to be treated correctly during the estimation process.
With Sekhon's new strategies, a small, non-random sample could yield precise results that would have otherwise required a much larger, randomly selected sample, in turn providing a much cheaper and faster way to get to the desired end point.
Taking a non-random sample of twenty-seven mass murders that took place between 1958 and 1999, J. Reid Meloy, a psychiatrist at the University of California, San Diego, found that the perpetrators, all of whom were adolescent men, were likely to be loners as well as to abuse drugs or alcohol.
Taking a non-random sample of twenty-seven mass murders that took place between 1958 and 1999, J. Reid Meloy, a psychiatrist at the University of California, San Diego, found that the perpetrators, all of whom were adolescent men, were likely to be loners as well as to abuse drugs or alcohol.
Our findings reflect a non-random sample.
First, we can observe a sharp drop in the sample size, which substantially increases the problem of a non-random sample.
In other words, sample selection bias was corrected by the selection equation, taking the impact of each observation on the non-random sample into account.
This was a non-random sample, and therefore, selection bias may have been introduced as the treating physician recruited the patients.
Regression to the mean is a statistical phenomenon that occurs whenever there is a non-random sample from a population with two measures that are imperfectly correlated.
