Question: Use of herbal medicines. The American Association of Nurse Anesthetists Journal (February 2000) published the results of a study on the use of herbal medicines before surgery. Each of 500
surgical patients was asked whether they used herbal or alternative medicines (e.g., garlic, ginkgo, kava, fish oil) against their doctor's advice before surgery. Surprisingly, 51% answered ‘‘yes.''
(a) Identify the experimental unit for the study.
(b) Identify the variable measured for each experimental unit.
(c) Is the data collected quantitative or qualitative?