Data Set 14-4:Each of the following represent data for a chi square test of independence. $\begin{array}{rlllllllll}
\mathrm{W} & \mathrm{X} & \mathrm{Y} & \mathrm{Z}\
3 \quad 1 & 15 \quad 45 & 10 \quad 20 \quad 30 & 15 \quad 18 \quad 24 \
25 \quad 2 & 40 \quad 10 & 30 \quad 20 \quad 10 & 21 \quad 35 \quad 40 \
25 \quad 3 & \quad & \quad \quad & 18 \quad 20 \quad 25
\end{array}$

-Refer to Data Set 14-4. Degrees of freedom equal 4 for
A) W
B) X
C) Y
D) Z
E) and .

Question

Data Set 14-4:Each of the following represent data for a chi square test of independence. $\begin{array}{rlllllllll}
\mathrm{W} & \mathrm{X} & \mathrm{Y} & \mathrm{Z}\
3 \quad 1 & 15 \quad 45 & 10 \quad 20 \quad 30 & 15 \quad 18 \quad 24 \
25 \quad 2 & 40 \quad 10 & 30 \quad 20 \quad 10 & 21 \quad 35 \quad 40 \
25 \quad 3 & \quad & \quad \quad & 18 \quad 20 \quad 25
\end{array}$

-Refer to Data Set 14-4. Degrees of freedom equal 4 for
A) W
B) X
C) Y
D) Z
E) and .

Quizplus · Accepted Answer

Degrees of freedom for a chi-square test of independence is (r-1)(c-1), where r is the number of rows and c is the number of columns. In this case, there are 3 rows and 4 columns, so the degrees of freedom is (3-1)(4-1) = 2(3) = 6.

Data Set 14-4:Each of the Following Represent Data for a Chi