Indicate your choice in all dropdowns.

I am interested in whether students at UC Davis get better grades after a good night's sleep. To do so, I am polling PSC1 students who visit my office hours. I ask them what grade they got at other General Education courses and how much they had slept the night before the final exam.

This is an example of a(n) correlational study.

The fact that I only poll students of PSC1 is an example of convenience sampling.

Question

Indicate your choice in all dropdowns.

I am interested in whether students at UC Davis get better grades after a good night's sleep. To do so, I am polling PSC1 students who visit my office hours. I ask them what grade they got at other General Education courses and how much they had slept the night before the final exam.

This is an example of a(n) correlational study.

The fact that I only poll students of PSC1 is an example of convenience sampling.

BlackTom AI · Accepted Answer

The prompt asks you to classify two statements separately in dropdowns.
First statement: 'I am polling PSC1 students who visit my office hours… This is an example of a(n) correlational study.' A correlational study examines relationships between variables as they naturally occur, without manipulating conditions. Here, sleep duration and prior grades are measured as they occur, and no experimental manipulation is described, so labeling this as correlational is appropriate.
Second statement: 'The fact that I only poll students of PSC1 is an example of convenience sampling.' Convenience sampling selects participants based on ease of access rather than random or systematic sampling from the entire population. Since the researcher is surveying only PSC1 students who visit office hours, this represents a convenience sample rather than a probability-based sample.
Option-by-option analysis:
- If you chose 'correlational' for the first dropdown: correct. The study design involves observing variables (sleep and grades) without intervention, which aligns with correlational research.
- If you chose 'convenience' for the second dropdown: correct. The sampling frame is restricted to readily available PSC1 students, not a random or representative subset of all students.
Why the other possibilities (if any) would be incorrect: since the statements correctly identify the study type and the sampling method, there aren’t alternate incorrect labels in this case. If one were to label the first statement as experimental, that would be inaccurate because there is no random assignment or manipulation of sleep or exam conditions. If one were to label the second statement as random sampling, that would be inaccurate because the selection relies on students who visit office hours, not a randomized process.

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