Correct Answer: Correct answer is: (B) Purposive sampling.
Exam Relevance: AP Statistics, GRE, MCAT
Difficulty: Moderate
Concept notes: Purposive sampling is a non-random sampling technique where the researcher selects participants based on specific criteria or purpose. Random sampling techniques, on the other hand, ensure that every member of the population has an equal chance of being selected.
Common Mistakes: Students may confuse purposive sampling with other non-random sampling methods, such as convenience sampling, leading to incorrect identification.
Explanations: Purposive sampling is not a random sampling technique because it involves selecting participants based on specific criteria rather than random selection. Cluster sampling, stratified sampling, and systematic sampling all involve random selection processes, making them random sampling techniques.
Option Analysis: - Option A: Cluster sampling is a random sampling technique where the population is divided into clusters and clusters are randomly selected.
- Option B: Purposive sampling is not a random sampling technique as it involves selecting participants based on specific criteria.
- Option C: Stratified sampling is a random sampling technique where the population is divided into strata and random samples are taken from each stratum.
- Option D: Systematic sampling is a random sampling technique where every nth member of the population is selected after a random start.
Ques 51 explanation is not related to the question…
Very useful question but plz give explanation with correct answer