TABLE 11-2
An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. The airline will choose the package that bumps as few passengers as possible during a month. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks. (A total of 20 weeks was included in the experiment.) The number of passengers bumped each week is obtained, which gives rise to the following Excel output:

-Referring to Table 11-2, the total degrees of freedom is
A) 3
B) 4
C) 16
D) 19

Question

TABLE 11-2
An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. The airline will choose the package that bumps as few passengers as possible during a month. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks. (A total of 20 weeks was included in the experiment.) The number of passengers bumped each week is obtained, which gives rise to the following Excel output:
 
-Referring to Table 11-2, the total degrees of freedom is
A) 3 
B) 4 
C) 16 
D) 19

Quizplus · Accepted Answer

The total degrees of freedom is calculated as the sum of the degrees of freedom for the numerator and the denominator in an ANOVA test. Typically, it is the total number of observations minus the number of groups. In this case, the total degrees of freedom is 19.

TABLE 11-2 an Airline Wants to Select a Computer Software Package for Package