Select the TWO options that are TRUE statements about survey sampling.

Question

Select one or more:
(1)Cluster sampling usually increases the sampling error compared to a simple random sample of the same size.
(2)In stratified sampling, each member of the population must be in exactly one stratum.
(3)Cluster sampling requires a complete list of the whole target population before the sampling can begin.
(4)Within each stratum in stratified sampling, individuals should be as different as possible from one another with respect to the subject under investigation.
(5)If a survey uses clustering, it must not use stratification as well.

Answer 1

1 and 2