1. In multiple regression analysis,residual analysis is used to test the require
ID: 2916172 • Letter: 1
Question
1.
In multiple regression analysis,residual analysis is used to test the requirement that:
A) the variation in theresiduals is the same for all fitted values of Y.
B) the independent variables arethe direct cause of the dependent variable.
C) the number of independentvariables included in the analysis is correct.
D) prediction error isminimized.
14.
The chi-square distribution becomesmore symmetrical as:
18.
An electronics company wants tocompare the quality of their cell phones to the cell phones fromthree competitors. They sample 10 phones from each company andcount the number of defects for each phone. If ANOVA were used tocompare the average number of defects, the treatments would bedefined as:
A) the number of cell phonessampled.
B) the average number ofdefects.
C) The total number ofphones
D) The four companies.
20.
The chi-square distribution is:
21.
The chi-square has:
A) one distribution.
B) two distributions.
C) a family ofdistributions.
D) a uniformdistribution.
Explanation / Answer
1) D) prediction error is minimized. 14) D) degrees of freedom increase. 18) D) The four companies.20) A) positively skewed.
21) C) a family of distributions.
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