I wonder if there is a way to tell, when the results of a closed card sorting test are statistically significant (e.g.: number of participants or a formular).
Background: I am working for a content heavy website (>1500 articles) and we want to improve our navigation.
In a 1.step we did an offline card sorting test and based on the results we came up with 6 Categories, which we now want to validate through the closed card sorting test. In this test, we want to test how well our 400 articles, fit into these 6 Categories.