Which of the following is a probability sampling technique?

There are 2 correct answers.

Question

Which of the following is a probability sampling technique?

There are 2 correct answers.

BlackTom AI · Accepted Answer

To tackle this question, I will evaluate each option in terms of whether it represents a probability sampling technique and whether it relies on random selection at one or more stages.
Option 1: 'Multi-stage cluster sampling' — This is a probability sampling method. It involves selecting random clusters (e.g., schools, districts) and then randomly sampling within those clusters, potentially in multiple stages. Because each stage uses random selection, the overall process allows probability-based inference to the population. This makes it a valid probability sampling technique.
Option 2: 'Simple Random Sampling' — This is the classic example of probability sampling. Every unit in the population has an equal chance of being selected, and the selection is typically performed via a random mechanism (random numbers, random draws, etc.). Its randomization at the single (or primary) stage ensures probabilistic estimation.
Option 3: 'Quota sampling' — This is a non-probability sampling method. While it aims to meet pre-set quotas for certain characteristics, the selection within each quota is not random, which undermines the probabilistic framework and introduces selection bias. Therefore, it is not a probability sampling technique.
Option 4: 'Crowdsourcing' — In research sampling terms, crowdsourcing is not a formal probability sampling method. It can involve recruiting respondents from a broad online crowd, but the selection process is typically self-selected or convenience-based, which does not guarantee known inclusion probabilities. Hence, it is not considered a probability sampling technique.
Option 5: 'Convenience sampling' — This is a classic non-probability method. Participants are chosen based on ease of access rather than randomization, leading to potential biases and invalid probabilistic inferences. Therefore, it is not a probability sampling technique.
Overall, the two correct probability sampling techniques here are Multi-stage cluster sampling and Simple Random Sampling, while the latter three choices do not meet the criteria for probability sampling due to non-random selection and lack of known inclusion probabilities.

Which of the following is a probability sampling technique? There are 2 correct answers.多项选择题

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