The best approach for obtaining a representative sample when using stratified random sampling is to
A) sample so that there is an equal number of respondents in the different strata.
B) use random-digit dialing.
C) sample so that the proportion of respondents in the different strata represents the proportions in the population.
D) eliminate people from the sampling frame who are unlikely to return a completed survey.

Question

Quizplus · Accepted Answer

The best approach for obtaining a representative sample when using stratified random sampling is to sample so that the proportion of respondents in the different strata represents the proportions in the population. This ensures that the sample is representative of the population in terms of the different strata or subgroups that exist within it. Sampling an equal number of respondents in the different strata (A) may not be appropriate if one stratum is much larger than another, and using random-digit dialing (B) may not be appropriate if the population is not evenly distributed across phone lines or has different communication preferences. Eliminating people from the sampling frame who are unlikely to return a completed survey (D) may introduce bias and can also affect the representativeness of the sample.

The Best Approach for Obtaining a Representative Sample When Using