R330 (version 1.0)

vaso.df: vaso-constriction data

Description

Data from a study of reflex vaso-constriction (narrowing of the blood vessels) of the skin of the fingers

Usage

data(vaso.df)

Format

A data frame with 39 observations on the following 3 variables.

Volume

volume of air breathed in

Rate

rate of intake of breath

Response

1 = vaso-constriction occurs, 0 = doesn't occur

Source

Finney, D. J. (1947). The estimation from individual records of the relationship between dose and quantal response. Biometrika, 34, 320-334.

References

Pregibon, D. (1981) Logistic regression diagnostics. Annals of Statistics, 9,705-724.

Examples

data(vaso.df)
plot(vaso.df$Rate,vaso.df$Volume,type="n", cex=1.2)
text(vaso.df$Rate,vaso.df$Volume,1:39,
col=ifelse(vaso.df$Response==1, "red","blue"),cex=1.2)
text(2.3,3.5,"blue: no VS", col="blue",adj=0, cex=1.2)
text(2.3,3.0,"red: VS", col="red", adj=0, cex=1.2)