While determining your schedule for next semester, you find a website that allow
ID: 3304423 • Letter: W
Question
While determining your schedule for next semester, you find a website that allows students to rate the effectiveness and likeability of their professors. You are interested in taking a course, but find that Professor Johns, who is teaching the course, has a low rating with five students submitting reviews.
Describe the sampling method used in this example and describe at least two rational reasons why students would be likely to submit reviews to the rating website.
Is the sample representative of all of Professor Johns’ students? How would you gather data regarding the effectiveness and likeability of Professor Johns?
Explanation / Answer
Answer:
For the given scenario, a sample is collected from the website responses. Anyone can give the response on the website. So, the collected sample is not a random sample or probability sample. For collection of responses from responder, website request or convey the user for their response or rating. So, this sample is not a simple random sample or any other type of random sample. This is a non-probability sample or convenience sample.
Students would be likely to submit reviews to the rating website because identity of the student is not open or there is no any requirement for giving identity for submitting reviews. Also, student would give correct rating or review by using this website and any type of biases would be avoided during the rating of Professors.
The collected sample is not a proper representative of all of Professor Johns’ students because sample does not represent entire population under study. We would use the simple random sampling method for collection of data for effectiveness and likeability of Professor Johns.
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