A professor teaching an introductory psychology class of 200 obtains a sample of 25 students by selecting every eighth name from the class list. The professor is using ____ sampling.

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The professor is using systematic sampling, which involves selecting individuals from a population at fixed intervals, in this case every eighth name from the class list. It is not simple random because not every individual in the population has an equal chance of being selected, and it is not convenience sampling because the professor is not selecting individuals based on ease of availability or willingness to participate. It is also not proportionate stratified random sampling because the sample is not proportionally representative of different subgroups within the population.

A Professor Teaching an Introductory Psychology Class of 200 Obtains