The grades of a class of 9 students on a midterm report (x) and on the final examination (y) are shown below. Use the data to complete parts (a) and (b). x 78 55 71 73 83 91 95 99 66 y 82 73 78 37 48 82 99 99 67 (a) Estimate the linear regression line. y= 17.4 + ( 0.715 )x (Round the constant to one decimal place as needed. Round the coefficient to three decimal places as needed.) (b) Estimate the final examination grade of a student who received a grade of 86 on the midterm report. ŷ = (Round to one decimal place as needed.)
The grades of a class of 9 students on a midterm report (x) and on the final examination (y) are shown below. Use the data to complete parts (a) and (b). x 78 55 71 73 83 91 95 99 66 y 82 73 78 37 48 82 99 99 67 (a) Estimate the linear regression line. y= 17.4 + ( 0.715 )x (Round the constant to one decimal place as needed. Round the coefficient to three decimal places as needed.) (b) Estimate the final examination grade of a student who received a grade of 86 on the midterm report. ŷ = (Round to one decimal place as needed.)
Chapter3: Polynomial Functions
Section: Chapter Questions
Problem 18T
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Transcribed Image Text:The grades of a class of 9 students on a midterm report (x) and on the final examination (y) are shown below. Use the
data to complete parts (a) and (b).
x 78 55 71
73 83 91 95
99
66
y 82 73
78
37 48
82
99
99
67
(a) Estimate the linear regression line.
y= 17.4 + ( 0.715 )x
(Round the constant to one decimal place as needed. Round the coefficient to three decimal places as needed.)
(b) Estimate the final examination grade of a student who received a grade of 86 on the midterm report.
ŷ =
(Round to one decimal place as needed.)
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