Tests for adverse reactions to a new drug yielded the results given in the table.The data will be analyzed to determine if there is sufficient evidence to conclude that an association exists between the treatment (drug or placebo)and the reaction (whether or not headaches were experienced). $$\begin{array} { r | c c }
& \text { Drug } & \text { Placebo } \
\hline \text { Headaches } & 11 & 7 \
\text { No headaches } & 73 & 91
\end{array}$$
A)Goodness-of-fit
B)Homogeneity
C)Independence

Question

Tests for adverse reactions to a new drug yielded the results given in the table.The data will be analyzed to determine if there is sufficient evidence to conclude that an association exists between the treatment (drug or placebo)and the reaction (whether or not headaches were experienced). $$\begin{array} { r | c c } 
& \text { Drug } & \text { Placebo } \
\hline \text { Headaches } & 11 & 7 \
\text { No headaches } & 73 & 91
\end{array}$$
A)Goodness-of-fit
B)Homogeneity
C)Independence

Quizplus · Accepted Answer

The correct statistical test for analyzing the association between two categorical variables (in this case, treatment type and headache occurrence) is a test for independence, often conducted using a chi-square test of independence.

Tests for Adverse Reactions to a New Drug Yielded the Results