When stimuli in an experimental condition are sampled from a universe of natural items, some variation among items will always be present.
Cronbach et al.'s [ 10] elegant extension of classical test theory, generalizability theory, assumes that observations are randomly sampled from a universe of possible observations, along different facets of measurement.
Random sampling from a population or universe (assumed by most statistical methods) is not possible when the population of interest is in the future.
Mr. Pataki has now moved on his own, issuing an executive order authorizing collection and storage of samples from a larger universe of offenders, including those in temporary release programs, parolees and probationers, and those who have taken plea bargains.
Mr. Pataki has now moved on his own, issuing an executive order authorizing collection and storage of samples from a larger universe of offenders than the Legislature has specified, including those in temporary release programs, parolees and probationers, and those who have taken plea bargains.
The state held a caucus in 2004 (due to a redistricting battle that delayed the primary), but 544,922 Democrats voted in the largely uncontested primary in May 2000, and 691,875 voted in May 1992 (statistics I gathered for a column noting that pollster PPP has been sampling from a total universe of 874,222).
Turtles were captured using 20.3-cm stretch mesh trawl nets without turtle excluder devices and a trawl tow time of 30 min. Approximately 750 trawl stations were randomly selected each year and sampled from a sampling "universe" representing every 1 square nautical mile in water depths of 4.8 14.9 m between Winyah Bay, South Carolina, and St. Augustine, Florida.
In contrast, defining a universe and then randomly selecting and interviewing a probability sample from a large population can be time-consuming and expensive (often disproportionately so).
The sample is a random sample from a sampled population.
It is assumed that studies provide a random sample from the universe of all possible studies.
