"InfidelityAccording to menstuff.org, 22% of married men have ...

Question

"InfidelityAccording to menstuff.org, 22% of married men have “strayed” at least once during their married lives.

a. Describe how you might go about administering a survey to assess the accuracy of this statement.

"

Accepted Answer

Welcome back everyone. In this problem, a national student placement agency claims that 85% of college graduates find full-time employment within 6 months of graduation. Which of the following correctly describes the primary method the university career center should use to gather data to assess this claim for its own graduates. A says to conduct a census of all graduates via a detailed phone interview to eliminate all non-response bias. B says to obtain a simple random sample of graduates and administer an anonymous self-administered survey exactly 6 months after graduation. C says to use a convenience sample of the 1st 100 graduates to respond to a short email asking only, are you employed? And the D says to track the social media accounts of all graduates to see if they post about finding a job. Now, let's think about the information that we have here, OK? The the agency claims that 85% of college graduates find full-time employment within 6 months of graduation, OK? So this group, college graduates, that's our population. And to assess a claim about a population proportion, the primary method should be a probability sampling method to ensure representativeness and minimize bias. So let's make a note of that here, a probability sampling method. OK. Is best To ensure Uh, representativeness, OK. And minimize bias. So what we need to do now is to look through our answer choices and see which one of them best fits this requirement. Which one of these is a probability sampling method that achieves these objectives. Now in AA it tells us to conduct a census of all graduates via a detailed phone interview. Now, a census is costly and often impractical, and it's not a probability sampling method. Otherwise, as well, phone interviews may discourage honest answers about employment status, and non-response bias is virtually impossible to eliminate. So since we can't do that, that since that would be impractical, it would not be the correct answer. B says to obtain a simple random sample of graduates and administer an anonymous self-administered survey exactly 6 months after graduation. No, by administering an anonymous self-administered survey, this ensures the sample is representative and this also ensures that we can collect honest data on a sensitive topic, that is their employment status. The survey is time sensitive, OK? And it's random. So this tells us that this is the best method the university career center should use. Therefore, B is the correct answer. We can know we're right if we look at our remaining choices. In C, it tells us to use a convenient sample of the 1st 100 graduates to respond to a short email, but a convenient sample introduces significant selection bias, as those who respond 1st may be disproportionately employed or unemployed. So this would not be representative. On the other hand, in answerw D, where it says we should track the social media accounts of our graduates to see if they post about finding a job, this relies on a voluntary response, that is if they choose to post and introduces extreme response bias, as many employed graduates may never post about their jobs, and unemployed graduates are highly unlikely to post about their status. Therefore, D is also incorrect. That's what we know B is the correct answer. Thanks a lot for watching everyone. I hope this video helped.

"InfidelityAccording to menstuff.org, 22% of married men have “strayed” at least once during their married lives.

a. Describe how you might go about administering a survey to assess the accuracy of this statement.
"

Key Concepts

Sampling Methods

Survey Design and Question Wording

Response Bias and Confidentiality

Watch next