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Data for Exercises 5.14 and 7.49
Dopamine
A data frame/tibble with 25 observations on two variables
dopamine b-hydroxylase activity (units are nmol/(ml)(h)/(mg) of protein)
a factor with levels nonpsychotic and psychotic
nonpsychotic
psychotic
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
# NOT RUN { boxplot(dbh ~ group, data = Dopamine, col = "orange") t.test(dbh ~ group, data = Dopamine, var.equal = TRUE) # }
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