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.Customer Spending by Promotion Run CustomersSpendingMore than $30CustomersSpending$30 or Less$10 off $50 15% off $5 off $25 Buy-1-Get-1 Half Off Which statement best describes how the manager can check if there is an association between the two variables?

To check whether promotion type and spending category are associated, the manager should compare conditional relative frequencies. They can calculate the percentages within each promotion (row) and compare spending patterns, or calculate the percentages within each spending category (column) and compare promotion patterns. Either orientation can reveal an association; having more than two promotions does not require one particular orientation. Therefore, the best choice is to check both row and column relative frequencies.

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