To satisfy the requirement of independent random sampling, the researcher
A) must use only non-probability sampling
B) may randomly select cases from one list of the population, then subdivide that sample according to the trait of interest
C) may randomly select an entire neighborhood, then select any member of each family in that neighborhood
D) must select only very small populations

Question

Quizplus · Accepted Answer

Randomly selecting cases from one list of the population and then subdividing the sample according to the trait of interest is a way to ensure independent random sampling. This is because each case has an equal chance of being selected and the sample is not biased towards one specific sub-group of the population. Option A is incorrect because non-probability sampling does not ensure independent random sampling. Option C is incorrect because selecting members of families in a neighborhood may introduce bias if those families are not representative of the entire population. Option D is incorrect because selecting very small populations does not ensure that the sample is representative of the larger population.

To Satisfy the Requirement of Independent Random Sampling, the Researcher