A study was conducted to determine whether 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 1 2 3 4 5 6 7 8 9 10 Score 38 33522925 7661 66 73 70 Grade 74 66 64 94 82 77 74 63 63 100 Find the following: (a) The correlation coefficient: r = (b) The least squares line: = (c) The predicted grade for the eighth student: (d) The residual for the eighth student: ⠀
A study was conducted to determine whether 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 1 2 3 4 5 6 7 8 9 10 Score 38 33522925 7661 66 73 70 Grade 74 66 64 94 82 77 74 63 63 100 Find the following: (a) The correlation coefficient: r = (b) The least squares line: = (c) The predicted grade for the eighth student: (d) The residual for the eighth student: ⠀
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
Transcribed Image Text:A study was conducted to determine whether 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 1 2 3 4 5 6 7 8 9 10
38 33 52 29 25 7661 66 73 70
Score
Grade 7466 64 9482777463 63 100
Find the following:
(a) The correlation coefficient: r =
(b) The least squares line: y =
-
(c) The predicted grade for the eighth student:
(d) The residual for the eighth student:
⠀⠀
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