Exhibit 11-6
The following shows the number of individuals in a sample of 300 who indicated they support the new tax proposal.
$\begin{array}{lc}\text { Political Party }&\text { Support }\
\text { Democrats } & 100 \
\text { Republicans } & 120 \
\text { Independents } & 80
\end{array}$ We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.
-Refer to Exhibit 11-6. The number of degrees of freedom associated with this problem is
A) 2
B) 3
C) 300
D) 299

Question

Exhibit 11-6
The following shows the number of individuals in a sample of 300 who indicated they support the new tax proposal.
 $\begin{array}{lc}\text { Political Party }&\text { Support }\
\text { Democrats } & 100 \
\text { Republicans } & 120 \
\text { Independents } & 80
\end{array}$ We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.
-Refer to Exhibit 11-6. The number of degrees of freedom associated with this problem is
A) 2
B) 3
C) 300
D) 299

Quizplus · Accepted Answer

The degrees of freedom for a chi-square test for uniform distribution is calculated as the number of categories minus one. Here, there are three categories (Democrats, Republicans, Independents), so the degrees of freedom is 3 - 1 = 2.

Exhibit 11-6 the Following Shows the Number of Individuals in a Sample

Exhibit 11-6
the Following Shows the Number of Individuals in a Sample