Independent Samples Test View

The default auxiliary view shows further details of the Kruskal-Wallis test for items_sum, including the test statistic and degrees of freedom for the test. Note that while the test tells you that the total number of items is not the same across primary credit card type (because its significance value is less than 0.05), it doesn't tell you which cards are actually different.
The view also displays separate boxplots for each primary credit card. The boxplots suggest that the numbers of items purchased by subjects with American Express, Visa, and Mastercard cards as their primary cards purchased more items than subjects with Discover or "Other" cards as their primary card, but you will need to look at the pairwise comparisons view in order to be sure.