In Problem 13.5, you used the GPA to predict the overall satisfaction of university students (stored in UP‐FBE ). Evaluate whether the assumptions of regression have been seriously violated.

Problem 13.5

The file UP‐FBE contains satisfaction ratings, age, GPA, origin, and gender of 100 students at the business department in a university in Hungary. The overall satisfaction of the students is calculated as the sum of teaching quality, offered scholarships, affordable tuition fee, affordable housing, careers service, and graduate employment, so the minimum overall satisfaction level is 6 and the maximum is 42. You want to examine the relationship between students’ overall satisfaction with their GPA.