The PSUs are selected at random by systematic selection following a random start, having being sorted by characteristics of the area.
In order to test the effectiveness of advertising, companies would need to run randomized controlled trials, in which some consumers are selected at random to view ads and some see nothing.
For each patient, the data for one of the two time points are selected at random so that each patient is in the selection only once but both time points are equally represented.
A simple approach for avoiding such an influence consists of the following steps [ 25- 27]: For each patient, the data for one of the two time points are selected at random so that each patient is in the selection only once but both time points are equally represented.
Under scenario E, sites forming the network are selected at random.
Normally, cyclists are drug-tested if they win or finish near the top of a race, or if they are selected at random.
Some travelers are selected at random for extra scrutiny; others because the government's computer program decides there is not enough information about them.
Each week during the preseason and the regular season, 10 players from a team are selected at random by computer and then tested.
The training is required for teachers in the sixth through eighth grades; students are selected at random.
In Hong Kong, jurors are selected at random, so this measure promises a reasonable measure of true justice.Deservedly, the changes have been praised.
Virtual tickets are selected at random, not in order of request, and you'll be notified by e-mail by 5 p.m. if you're successful.
