A Sample That Is Chosen in Stages Is a Sample

Multiple Choice

A sample that is chosen in stages is a sample in which

A) every member of the population has the same chance of being selected.
B) the population is first divided into groups of similar individuals, then a separate simple random sample is selected from each group and combined to form the full sample.
C) every possible sample of the same size has the same chance of being selected.
D) we choose the final sample in several steps; for example, first states, then counties in those states, then households in those counties.