Write the equation of the regression line. B. Interpret each one of the slopes in this context. C. Calculate the estimated number of days absent and the residual for the first observation in the data set: a student who is aboriginal, male, a slow learner, and missed 2 days of school.
Write the equation of the regression line. B. Interpret each one of the slopes in this context. C. Calculate the estimated number of days absent and the residual for the first observation in the data set: a student who is aboriginal, male, a slow learner, and missed 2 days of school.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
A. Write the equation of the regression line.
B. Interpret each one of the slopes in this context.
C. Calculate the estimated number of days absent and the residual for the first observation in the data set: a student who is aboriginal, male, a slow learner, and missed 2 days of school.

Transcribed Image Text:Researchers interested in the relationship between absenteeism from school and certain demographic characteristics of children collected data from
146 randomly sampled students in rural New South Wales, Australia, in a particular school year. Below are three observations from this data set.
eth
Irn
days
sex
1
1
1
2
2
1
1
11
:
146
1
37
The summary table below shows the results of a linear regression model for predicting the average number of days absent based on ethnic background
(eth: 0 - aboriginal, 1 - not aboriginal), sex (sex: 0 - female, 1 - male), and learner status (Irn: 0 - average learner, 1 - slow learner).
Estimate
Std. Error
t value Pr(>|t|)
(Intercept)
18.93
2.57
7.37
0.0000
eth
-9.11
2.60
-3.51
0.0000
sex
3.10
2.64
1.18
0.2411
Irn
2.15
2.65
0.81
0.4177
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