Suppose you ran the following regression and found this statistically significant result: AGE = 120 + -4*HEALTH where AGE is how old someone is and HEALTH is a rating on how healthy they are, from 1 (very unhealthy) to 20 (very healthy). You realize you have it backwards: age causes health, not health causes age. What should the new equation be? 1 HEALTH = -30 + -0.25*AGE 2 It is impossible

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 6PPS
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Suppose you ran the following regression and found this statistically significant result:

 

AGE = 120 + -4*HEALTH

where AGE is how old someone is and HEALTH is a rating on how healthy they are, from 1 (very unhealthy) to 20 (very healthy). You realize you have it backwards: age causes health, not health causes age. What should the new equation be?

1  

HEALTH = -30 + -0.25*AGE

2  

It is impossible to tell without re-running the regression.

3  

HEALTH = 120 + -4*AGE

4  

HEALTH = -30 + 0.25*AGE

5  

HEALTH = 30 + -0.25*AGE

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