Four surgical procedures currently are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is called a "clear" operation. A heart center wants to compare the 4 procedures, and collects the following numbers of patients from their own records: Which of the following tests will be the most appropriate to find out whether the 4 procedures are equally effective? A) χ² test for difference in proportions B) Z test for difference in proportions C) one-way ANOVA F test for differences among more than two means D) McNemar test

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The Answer of Four surgical procedures currently are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is called a "clear" operation. A heart center wants to compare the 4 procedures, and collects the following numbers of patients from their own records: Which of the following tests will be the most appropriate to find out whether the 4 procedures are equally effective? A) χ² test for difference in proportions B) Z test for difference in proportions C) one-way ANOVA F test for differences among more than two means D) McNemar test

Four Surgical Procedures Currently Are Used to Install Pacemakers