cholesterol: Cholesterol and age for samples of women in Iowa and Nebraska

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Cholesterol and age for samples of women in Iowa and Nebraska

Description

Snedecor & Cochran (1967) report a subsample of measurements from an early study of health and nutrition by Swanson et al. (1955), with a particular focus on cholesterol. Women were recruited from both Iowa and Nebraska and there is interest in whether there is any evidence of a systematic difference between the groups. If there is no evidence of a difference, the groups might reasonably be pooled. An upward trend in cholesterol with age is expected.

The cholesterol dataframe consists of three columns of data:

• Age: age in years;

• Cholesterol: cholesterol in mg / 100 ml;

• Location: The state of residence, Iowa or Nebraska.

References

Snedecor, George W. and Cochran, William G. (1967). Statistical Methods. The Iowa State University Press, USA. Swanson, P., Levertost, R., Gram, M. R., Roberts, H. and Pesek, I. (1955). Blood values of women : cholesterol. Journal of Gerontology 10, 41-47.

Examples

## Not run: 
library(ggplot2)
ggplot(cholesterol, aes(Age, Cholesterol, col = Location)) + geom_point()

## End(Not run)

rpanel documentation built on March 12, 2026, 9:07 a.m.