usair {gamlss.data} | R Documentation |
US air pollution data set
Description
US air pollution data set taken from Hand et al. (1994) data set 26, USAIR.DAT, originally from Sokal and Rohlf (1981).
Usage
data(usair)
Format
A data frame with 41 observations on the following 7 variables.
- y
a numeric vector: sulpher dioxide concentration in air mgs. per cubic metre in 41 cities in the USA
- x1
a numeric vector: average annual temperature in degrees F
- x2
a numeric vector: number of manufacturers employing >20 workers
- x3
a numeric vector: population size in thousands
- x4
a numeric vector: average annual wind speed in miles per hour
- x5
a numeric vector: average annual rainfall in inches
- x6
a numeric vector: average number of days rainfall per year
Source
Hand et al. (1994) data set 26, USAIR.DAT, originally from Sokal and Rohlf (1981)
References
Hand, D. J., Daly, F., Lunn, A. D., McConway, K. J. and Ostrowski, E. (1994), A handbook of small data sets, Chapman and Hall, London.
Examples
data(usair)
str(usair)
plot(usair)
# a possible gamlss model
# gamlss(library)
#ap<-gamlss(y~cs(x1,2)+x2+x3+cs(x4,2)+x5+cs(x6,3)+x4:x5,
# data=usair, family=GA(mu.link="inverse"))
#