Sampling Read the following excerpt from Perreault, Houston, and Wilkins (2014)

Question

Sampling Read the following excerpt from Perreault, Houston, and Wilkins (2014) study: "Participants were undergraduate students (N=168) from a large Midwestern university located in an area of the United States on the geographic edge of tornado alley' where violent weather is more likely to occur from April through October (Drabek & Key, 1984). Participants received course or extra credit for participation. Participants were between the ages of 18 and 25 years and 69% of participants were female Is this a probability or non-probability sample? Explain. What clues led you to that answer? What specific type of sampling procedure was used? Why?

Explanation / Answer

THis is non-probability sample.

The type of non- probability sampling used here is:
Purposive sampling, where the researcher chooses a sample based on the knowledge about the population and study. The clue is: " located in an area of the United States on the geographical edge of torato alley where violent weather is more likely to occur".

Purposive sampling procudure was used because the researcher's interest was to study the violent weather.

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