Preparing to Conduct Inference for Two-Way Tables — Quiz
Question 7 • Statistics
The researcher would like to know if these data provide convincing evidence that the distribution of snack choice differs for the various room colors in the population of all volunteers like these. What is the appropriate inference procedure?
Answer
A
chi-square test for homogeneity because the data come from independent treatment groups
B
chi-square test for association/independence because the data come from independent treatment groups
C
chi-square test for association/independence because the data come from one random sample
D
chi-square test for goodness of fit because the data come from one random sample
Explanation
The question compares the distribution of snack choice across volunteers exposed to different room-color treatment groups. A chi-square test for homogeneity is appropriate for comparing a categorical distribution across independent groups. A test for association/independence would instead fit a single random sample classified by two categorical variables.
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