Exhibit 12-6
The following shows the number of individuals in a sample of 300 who indicated they support the new tax proposal.
We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.
-Refer to Exhibit 12-6. The number of degrees of freedom associated with this problem is
A)2
B)3
C)300
D)299

Question

Exhibit 12-6
The following shows the number of individuals in a sample of 300 who indicated they support the new tax proposal.  
We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.
-Refer to Exhibit 12-6. The number of degrees of freedom associated with this problem is
A)2 
B)3 
C)300 
D)299

Quizplus · Accepted Answer

The number of degrees of freedom is equal to the number of observations minus the number of parameters estimated. In this case, there are 300 observations and 1 parameter estimated (the mean). Therefore, the number of degrees of freedom is 300 - 1 = 299.

Exhibit 12-6 The Following Shows the Number of Individuals in a Sample