[R.sup.2] results for the risk adjustment algorithms containing all 122 variables across the samples used for fit and prediction (i.e., matched or random sample
) are compared in Table 2.
The aim was that students would come to appreciate how decisions could be made with more certainty if random samples
from a broader population were considered, and that every Year 5 student in the population had the same/equal chance of being in the sample.
A sample for this process is "random" when the vials from different populations are mixed together forming a "pool of mixed product", and random samples
of n vials are taken over time.
Creating a stratified random sample
begins by dividing the population into subgroups (known as strata) based on one or more essential characteristics.
The other 39 studies were all based on random samples
, yet nine were nevertheless challenged.
Researchers from the Center for Tobacco Control Research and Education compared a random sample
of the top 20 grossing films of the 1950s to movies released in 2001 and 2002.
From a random sample
of 5,200 Texas college freshmen, the researchers found that nearly three out of four high-achieving students who didn't make the top cut were still able to attend either Texas A&M University or UT, if they wanted to.
MR Logic examined a random sample
of 10,000 unsolicited commercial e-mails each week over four weeks ending Feb.
Bebington and West Wirral and Birkenhead and Wallasey primary care trusts this week begin their second annual survey of a random sample
of patients throughout Wirral.
In a case-control study, the conventional practice is to recruit sequential cases (or a random sample
) and not re select among them, other than for reasons of ability to participate, such as severity of illness or language problems.
The study included a random sample
of records drawn from policies across the nation between June 2000 and 2001.
Systematic random sampling was conducted across the whole area to determine the lowest criterion value, and then a new systematic random sample
was taken with adaptive sampling around each tow that exceeded the fixed criterion value.