24. The residual for the department that has 55% favourable responses to the handling of employee complaints and 43% favourable responses to the overall running of the company is closest to: 12.0 -12.9 -16.8 12.9 16.8
24. The residual for the department that has 55% favourable responses to the handling of employee complaints and 43% favourable responses to the overall running of the company is closest to: 12.0 -12.9 -16.8 12.9 16.8
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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Transcribed Image Text:24. The residual for the department that has 55% favourable responses to the handling of employee complaints
and 43% favourable responses to the overall running the company is closest to:
O 12.0
O-12.9
O-16.8
O 12.9
16.8

Transcribed Image Text:A survey of employees at a large financial organisation was conducted to determine the overall sentiment
towards various aspects of how the company operates. 30 randomly selected departments in the
organisation participated in the study. Every employee in these 30 randomly selected departments filled
in a questionnaire, and the data were aggregated to calculate the following two variables of interest:
Rating
ComplaintsThe percentage of favourable
responses (in each
department) to how the company
handles employee complaints
Source: Chatterjee, S. and Price, B. (1977) Regression Analysis by Example. New York: Wiley. (Section
3.7, p.68ff of 2nd ed. (1991).)
A simple linear regression was conducted. A scatter plot of Rating versus Complaints is shown in
Figure 1 and the results of the regression analysis are shown in Table 1.
Rating
80
70
60
The percentage of favourable
responses (in each department)
to the overall running of the
company.
50
40
Model
1
40
Figure 1: Rating versus Complaints.
50
(Constant)
Complaints
a. Dependent Variable: Rating
Table 1: Regression output.
14.376
.755
Unstandardized Coefficients
Std. Error
B
Rating versus Complaints
6.620
.098
60
Complaints
Coefficients
Standardized
Coefficients
Beta
.825
70
t
2.172
7.737
Sig.
.039
.000
80
90
95.0% Confidence Interval for B
Lower Bound Upper Bound
27.937
.954
.816
.555
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