The control group was a random sample drawn from the general population.

In statistics, a population is a set of things from which samples may be drawn.

A sample of blood is drawn and sent to a lab for testing.

The sample was drawn from a list of the 4,320 delegates to the convention.

The sample was drawn from the list of 2,277 total delegates to the Republican convention.

The blood of patients who had samples drawn for common medical procedures was tested.

A sample of British households was drawn and first interviewed in 1991.

A sample of 5,362 of the original children was then drawn.

After the blood samples were drawn, the orderly relaxed a little.

In sampling, this includes defining the population from which our sample is drawn.