A store manager wishes to investigate whether there is a relationship between the type of promotion offered and the number
of customers who spend more than $30 on a purchase. Data will be gathered and placed into the two-way table below.

Which statement best describes how the manager can check if there is an association between the two variables?
The manager must check relative frequencies by row because there are more than two different promotions
The manager must check relative frequencies by column because there are more than two different promotions