20. The data below are the average one-way commute times (in minutes) for selected students and the number of absences for those students during the term. Commute time (min), x 72 85 Number of absences, y 3 7 91 | 90 |88 98 75 10 10 8 15 4 100 | 80 15 5 A) Find the equation of the regression line for the given data. (Round the regression line values to the nearest thousandth.) B) Determine the residual of a data point for which x = 80 and y = 5. (Round to thousandths.) C) What would be the predicted number of absences if the commute time was 40 minutes? (Round your predicted score to the nearest integer.) D) Is the question in part C a reasonable question? (Explain why or why not.)
20. The data below are the average one-way commute times (in minutes) for selected students and the number of absences for those students during the term. Commute time (min), x 72 85 Number of absences, y 3 7 91 | 90 |88 98 75 10 10 8 15 4 100 | 80 15 5 A) Find the equation of the regression line for the given data. (Round the regression line values to the nearest thousandth.) B) Determine the residual of a data point for which x = 80 and y = 5. (Round to thousandths.) C) What would be the predicted number of absences if the commute time was 40 minutes? (Round your predicted score to the nearest integer.) D) Is the question in part C a reasonable question? (Explain why or why not.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 5PPS
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Transcribed Image Text:20. The data below are the average one-way commute times (in minutes) for selected students and the number
of absences for those students during the term.
Commute time (min), x 72 85
Number of absences, y
3
7
91 | 90 |88 98 75
10 10 8 15 4
100 | 80
15 5
A) Find the equation of the regression line for the given data. (Round the regression line values to the nearest
thousandth.)
B) Determine the residual of a data point for which x = 80 and y = 5. (Round to thousandths.)
C) What would be the predicted number of absences if the commute time was 40 minutes? (Round your
predicted score to the nearest integer.)
D) Is the question in part C a reasonable question? (Explain why or why not.)
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