Lesson plan
Judgment sample
A judgment sample, also known as an expert or purposive sample, is a type of non-random sample, where a researcher or expert selects the sample based on who they believe would be most useful or appropriate for the study. Results obtained from a judgment sample are subject to some degree of bias and may be hard to generalize, due to the chosen sample not representing the larger population. A random sample would provide less bias, but potentially less raw information. The pitfalls of this system are significant because of bias, limited statistical methods, and limits to an expert's ability to choose a good sample.
Article summary
A judgment sample, also known as an expert or purposive sample, is a type of non-random sample, where a researcher or expert selects the sample based on who they believe would be most useful or appropriate for the study. Results obtained from a judgment sample are subject to some degree of bias and may be hard to generalize, due to the chosen sample not representing the larger population. A random sample would provide less bias, but potentially less raw information. The pitfalls of this system are significant because of bias, limited statistical methods, and limits to an expert's ability to choose a good sample.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.