Question 3.68 The website RateMyProfessors.com reported a correlation of 0.62 be

Question

Question 3.68 The website RateMyProfessors.com reported a correlation of 0.62 between the quality rating of the professor (on a simple 1 to 5 scale with higher values representing higher quality) and the rating of how easy a grader the professor is. This correlation is based on ratings of nearly 7000 professors. a. How would you interpret this correlation? b. What would you expect this correlation to equal if the quality rating did not tend to depend on the easiness rating of the professor? roblems is homework accinm

Explanation / Answer

i)

The value of correlation Coefficient being equal to 0.62 indicates that there is a moderate positive linear relationship between the quality rating of the processor and the rating of how easy upgraded the processor is. this indicates that as the value of "rating of how easy upgraded the processor is" increases, the value of "the quality rating of the processor" also increases.

ii)

if the two variables "rating of how easy upgraded the processor is" and "the quality rating of the processor" are independent. then covariance betweeen them is zero. hence the value of correlation coefficient between them is also zero.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.