A researcher performed a study to determine whether an association exists between sex and blood type.He obtained the following sample data. $\begin{array}{|l|c|c|c|c|c|}
&&\text {Blood Type }\
\hline \text {Sex }& \mathrm{O} & \mathrm{A} & \mathrm{B} & \mathrm{AB} & \text { Total } \
\hline \text { Female } & 163 & 137 & 40 & 20 & 360 \
\hline \text { Male } & 137 & 133 & 35 & 15 & 320 \
\hline \text { Total } & 300 & 270 & 75 & 35 & 680 \
\hline
\end{array}$
A)Independence
B)Goodness-of-fit
C)Homogeneity

Question

Quizplus · Accepted Answer

The correct choice is Independence because the study is examining the relationship between two categorical variables: sex (male or female) and blood type (O, A, B, AB). The goal is to determine if there is an association between these two variables, which is a question of independence.

A Researcher Performed a Study to Determine Whether an Association