A survey of employees at a large financial organisation was conducted to determine the overall sentimenttowards various aspects of how the company operates. 30 randomly selected departments in theorganisation participated in the study. Every employee in these 30 randomly selected departments filledin a questionnaire, and the data were aggregated to calculate the following two variables of interest:Rating The percentage of favourableresponses (in each department)to the overall running of thecompany.ComplaintsThe percentage of favourableresponses (in eachdepartment) to how the companyhandles employee complaintsSource: Chatterjee, S. and Price, B. (1977) Regression Analysis by Example. New York: Wiley. (Section3.7, p.68ff of 2nd ed. (1991).)A simple linear regression was conducted. A scatter plot of Rating versus Complaints is shown inFigure 1 and the results of the regression analysis are shown in Table 1.Rating807060504040Model1Figure 1: Rating versus Complaints.5014.376.755Unstandardized CoefficientsBStd. Error(Constant)Complaintsa. Dependent Variable: RatingTable 1: Regression output.Rating versus Complaints6.620.09860ComplaintsCoefficientsStandardizedCoefficientsBeta.82570t2.1727.737Sig..039.000809095.0% Confidence Interval for BLower Bound Upper Bound27.937.954.816.555 27. In Figure 1, two different departments have a Complaints percentage of 70%. Under this regression analysis,which one of the following statements about these two departments is true?They have the same observed Rating percentages.They have different observed Rating percentages and different 95% prediction intervals.O They have the same 95% prediction intervals and different residuals.O They are not independent of each other.O They have the same residuals and different observed Rating percentages.

Given: A scatterplot for the variable's ratings & complaints is shown. A regression output for…

Answered: A survey of employees at a large…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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