Sampling Method The patients were recruited among those at a V...

Question

Sampling Method The patients were recruited among those at a Veterans Affairs hospital. What type of sampling best describes the way in which the subjects were chosen: simple random sample, systematic sample, convenience sample, stratified sample, cluster sample? Does the method of sampling appear to adversely affect the quality of the results?

Accepted Answer

Hello, everyone, let's take a look at this question together. Selection of students for a university survey where a university conducted a study by selecting students from its on-campus health clinic. The students who visited the clinic during a particular week were invited to participate in a survey about their physical and mental well-being. What type of sampling best describes how the subjects were chosen. Is it simple random sample, systematic sample, convenient sample, gratified sample, or cluster sample, and does the sampling strategy seem to have a negative impact on the quality of the findings? And we have to determine, is it answer choice A, a simple random sample, and no, answer choice B, a systematic sample, and no. Answer choice C, a convenient sample and yes, or answer choice D, a stratified sample and yes. So, in order to solve this question, we have to recall what we have learned about the types of sampling methods, specifically the simple random sample, the systematic sample, the convenience sample, and the stratified sample to determine which sampling method best describes how these subjects were chosen, and if that sampling strategy seems to have a negative impact on the quality of findings. Well, starting off with a simple random sample, we know that a simple random sample is where every individual has an equal chance of being selected. Then a systematic sample is where these subjects are selected at a fixed interval from an ordered list. A convenient sample is where these subjects are chosen based on ease of access rather than randomization. And lastly, a stratified sample is where the population is divided into distinct subgroups or strata, and a sample is taken from each. So using the characteristics we have just defined. About the different types of sampling and the information provided to us in the question about the survey, we can identify that in the study, they selected students who visited the clinic during a particular week and the selected students were based on who happened to be available and not through a randomization process or predefined intervals. And based on this information, we can identify that the The sampling method that best describes how these subjects were chosen is a convenient sample. As a convenient sample involves subjects that are chosen based on ease of access and no randomization process or pre-defined interval. And since the subjects were chosen through a convenient sample, answer choice C is the correct answer, which we also know that answer choice C is correct, as it Says that the sampling strategy did in fact have a negative impact on the quality of findings, as this sampling method involved selecting students who visited the clinic during a particular week, and students who do not visit the clinic may have different health conditions, and as a result, the results of the survey may not represent all of the students. So answer choice C is the only correct answer choice. I hope you found this video to be helpful. Thank you and goodbye.

Key Concepts

Sampling Methods

Convenience Sampling

Impact of Sampling on Results

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