Data for Exercise 10.60
A data frame/tibble with 59 observations on two variables
median costs of appendectomies at hospitals across the state of North Carolina in 1992
a vector classifying each hospital as rural, regional, or metropolitan
Consumer's Guide to Hospitalization Charges in North Carolina Hospitals (August 1994), North Carolina Medical Database Commission, Department of Insurance.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.