Blood proteins in children from Papua New Guinea. C-reactive protein (CRP) is a substance that can be measured in the blood. Values increase substantially within 6 hours of an infection and then reach a peak in 24 to 48 hours. In adults, chronically high values have been linked to an increased risk of cardiovascular disease. In a study of apparently healthy children aged 6 to 60 months in Papua New Guinea, CRP was measured in 90 children.27 The units are milligrams per liter of blood (mg/l). Here are the data from a random sample of 40 of these children:
(a) Find the five-number summary for these data.
(b) Make a boxplot.
(c) Make a histogram.
(d) Write a short summary of the major features of this distribution. Do you prefer the boxplot or the histogram for these data?