I have questions. for the first part I don't know the answers.
for the second part, I have problem with (b) What is the correlation coefficient of the regression line?
Set4Linear Application: Problem 5 Previous Problem List Next (1 point) A study was conducted to detemine whether a the final grade of a student in an introductory psychology course is linearly related to his or her performance on the verbal ability test administered before college entrance. The verbal scores and final grades for 10 students are shown in the table below. Student Verbal score z Final Grade y 1 52 43 2 35 42 3 75 88 4 78 92 5 41 36 6 33 38 37 43 8 54 66 77 10 29 28 Find the least squares line. Should the regression be used to predict the final grade of a student with a verbal score of 100? answer:
Show transcribed image textSet4Linear Application: Problem 5 Previous Problem List Next (1 point) A study was conducted to detemine whether a the final grade of a student in an introductory psychology course is linearly related to his or her performance on the verbal ability test administered before college entrance. The verbal scores and final grades for 10 students are shown in the table below. Student Verbal score z Final Grade y 1 52 43 2 35 42 3 75 88 4 78 92 5 41 36 6 33 38 37 43 8 54 66 77 10 29 28 Find the least squares line. Should the regression be used to predict the final grade of a student with a verbal score of 100? answer:
