All values are measured levels of serum cotinine (in ng/mL), a metabolite of nicotine. (When nicotine is asborbed by the body, cotinine is produced.) Data are from the U.S. Department of Health and Human Services, National Center for Health Statistics, Third National Health and Nutrition Examination Survey.
SMOKER (smokers, or subjects reported tobacco use)
ETS (nonsmokers exposed to environmental tobacco smoke at home or work)
NOETS (nonsmokers with no exposure to environmental tobacco smoke at home or work)
A data frame with 40 rows and 3 variables
Triola, M. 2018. Elementary Statistics, 13th ed. Boston, MA: Pearson.
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