A grocery store chain surveyed a set of customers concerning their purchasing habits. Given the survey results and how much each customer spent in the previous month, the store wants to see if the frequency with which customers shop is related to the amount they spend in a month, controlling for the gender of the customer.

This information is collected in grocery_1month.sav. Use the GLM Univariate procedure to perform a two-factor (or two-way) ANOVA on the amounts spent.