We surveyed program participants and graduates about their preparation, practices, and attitudes, comparing their responses to those of a national random sample of principals. (wallacefoundation.org)
Although current wisdom, based on random samples, holds that they did die from the bacterium, hardly a tiny fraction of the dead trees has been tested. (scientificamerican.com)
The indirect effect was calculated 5,000 times using random sampling with replacement to build a sampling distribution. (pnas.org)