A graduate-school admissions committee is concerned about the relationship between an applicant’s GPA in college and whether or not the individual eventually completes the requirements for a doctoral...

A graduate-school admissions committee is concerned about the relationship between an applicant’s GPA in college and whether or not the individual eventually completes the requirements for a doctoral degree. They first looked at the data on 25 randomly selected students who entered the program 7 years ago, assigning a score of 1 to those who completed the Ph.D. program, and of 0 to those who did not. The data follow.

a.       Plot these data. b. Calculate . c. Calculate . d. Is it reasonable to look at in this situation? Why or why not?