Description Format Source References Examples
Relative rates of hemoglobin concentration in four populations of humans living at different altitudes.
A data frame with 40 observations on the following 3 variables.
a numeric vector
a factor with levels: Andes
, Ethiopia
,
Tibet
, and USA
a numeric vector
inferred from Beall, C.M., M.J. Decker, G.M. Bittenham, I. Kushner, A. Gebremedhin, K.P. Strohl. 2002. An Ethiopian pattern of human adaptation to high-altitude hypoxia. Proceeding of the National Academy of Sciences (USA) 99(26): 17215-17218.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC139295/
1 2 3 4 | str(Hemoglobin)
xyplot(relative.frequency ~ hemoglobin | group, Hemoglobin,
type ='h', lwd=4, layout=c(1,4))
|
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