Iron Content Measurements

Description

The ironslag data frame has 53 rows and 2 columns. Two methods for measuring the iron content in samples of slag were compared, a chemical and a magnetic method. The chemical method requires greater effort than the magnetic method.

Usage

ironslag

Format

This data frame contains the following columns:

chemical

a numeric vector containing the measurements coming from the chemical method

magnetic

a numeric vector containing the measurments coming from the magnetic method

Source

Hand, D.J., Daly, F., McConway, K., Lunn, D., and Ostrowski, E. eds (1993) A Handbook of Small Data Sets. London: Chapman & Hall.

Examples

iron.lm <- lm(chemical ~ magnetic, data = ironslag)
oldpar <- par(mfrow = c(2,2))
plot(iron.lm)
par(oldpar)