This data comes from an observational study to contrast cholesterol levels in rural and urban Guatemalan Indians
A data frame with 94 observations on the following 2 variables.
Serum total cholesterol of individual (in mg/l)
a factor with levels
indicating to which group the individual belongs
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Tejada, C., Charm, S., Guzman, M., Mendez, J. and Kurland, G. (1964). The Blood Viscosity of Various Socioeconomic Groups in Guatemala, American Journal of Clinical Nutrition: 303–308.
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