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Exercise 3
The following Two-way Table presents data on two variables, "Type of Surgery" and "Level of Com-
plication”. There are three categories in Type of Surgery (Gastric-banding, Sleeve-gastrectomy and
Gastric-bypass), and three categories in Level of Complication (Serious, Non-Life-Threat and None).
The table presents the counts of patients in each level of Surgery by each level of Complication.