xmp12.16 {Devore6}R Documentation

data from Example 12.16

Description

Correlation of concentrations of two pollutants

Usage

data(xmp12.16)

Format

A data frame with 16 observations on the following 2 variables.

x
a numeric vector of ozone concentrations (ppm)
y
a numeric vector of secondary carbon concentrations (microgram/m-cub)

Source

Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury

References

``The Carbon Component of the Los Angeles Aerosol: Source Apportionment and Contributions to the Visibility Budget'', J. Air Polution Control Fed., 1984: 643-650.

Examples

data(xmp12.16)
plot(y ~ x, data = xmp12.16, xlab = "Ozone concentration (ppm)",
     ylab = "Secondary carbon concentration")
cor(xmp12.16$x, xmp12.16$y)
cor.test(~ x + y, data = xmp12.16)

[Package Devore6 version 0.5-6 Index]