Question

the two-way table below describes the practice habits of members of the school band and choir.

practice habits of school musicians

	less than 30 minutes per day	at least 30 minutes per day
choir students	18	12

which statement best describes the relationship between the two variables?

• there is an association because the relative frequencies by row are different.
• there is an association because the relative frequencies by row are similar.
• there is no association because the relative frequencies by row are different.
• there is no association because the relative frequencies by row are similar.

Explanation:

Calculate row relative frequencies

$$
LATEXBLOCK0
$$

Compare relative frequencies and determine association

$$
LATEXBLOCK1
$$

Answer:

• There is an association because the relative frequencies by row are different.
• There is an association because the relative frequencies by row are similar.
• There is no association because the relative frequencies by row are different.
• There is no association because the relative frequencies by row are similar. (Correct answer)