What are the degrees of freedom for the chi-square test of independence between cereal manufacturers (mfr)…

What are the degrees of freedom for the chi-square test of independence between cereal manufacturers (mfr)…: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - cereal.csv