What is a major drawback of probability sampling?

Question

BlackTom AI · Accepted Answer

To tackle the question, we first consider what 'probability sampling' implies in general: every member of the population has a known, nonzero chance of being selected, and the method uses randomization to assign those chances. 
Option 1: 'The sampling error cannot be measured.' This is inaccurate because one of the core advantages of probability sampling is that sampling error can be estimated statistically (e.g., via standard errors and confidence intervals). Therefore this statement mischaracterizes probability sampling.
Option 2: 'It can be time consuming.' This is a valid drawback. Probability sampling often requires a complete or well-defined sampling frame, careful randomization, and potentially large-scale data collection efforts, all of which can be time-intensive.
Option 3: 'Everyone has an equal chance of selection.' While true for simple random sampling, this is not universally true for all probability designs (e.g., stratified or cluster sampling can give different individuals varying probabilities). As a blanket statement about probability sampling, it is not always accurate and does not describe a drawback.
Option 4: 'The most difficult population from which to obtain information is chosen.' This misstates the concept. In probability sampling, the design can be tailored for any population, but selecting the most difficult population is not a inherent drawback of probability sampling itself; it’s more about access issues than the sampling method.
Option 5: 'Marketers must rely on the judgment of the researcher in respondent selection.' This describes nonprobability sampling or judgment sampling, where expertise guides selection; probability sampling minimizes researcher judgment in selection by randomization, so this statement is incorrect as a drawback of probability sampling.
In summary, the only statement that accurately reflects a practical drawback of probability sampling among the options is that it can be time consuming; the other choices either misstate statistical properties, overgeneralize about equal probability, or describe issues more pertinent to nonprobability sampling.

What is a major drawback of probability sampling?Single choice

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