For this problem we are being asked about the "overall" relationship between 2 sets of scores,
NOT to predict. It is a non-directional, two-tailed problem and to solve, a regression equation is
needed. In this problem we are being asked to calculate SEE.
A professor claims that scores on the first test provide an excellent predictor of students'
performance throughout the semester. The following are students' first- exam scores and final
grades for twelve (12) students: Please use instructions above and give detailed answers with
step by step calculations.
a. Is the professor correct? Test with a = 0.05.
b. How accurately do the exam scores predict final grades? Compute the standard error of the
estimate.
FIRST EXAM FINAL GRADE
62 74
73 93
88 68
82 79
85 91
77 72
94 96
65 61
91 92
74 82
85 93
98 95
Solution
check