The dataset consists of density and hardness measurements from 36 Australian Eucalypt hardwoods.
A data frame with 36 observations on the following 2 variables:
density (a measure of density of the timber)
hardness (the Janka hardness of the timber)
Janka hardness is a structural property of Australian hardwood timbers. The Janka hardness test measures the force required to imbed a steel ball into a piece of wood.
Williams, E.J. 1959. Regression Analysis. John Wiley & Sons, New York.
Ugarte, M. D., Militino, A. F., and Arnholt, A. T. 2015. Probability and Statistics with R, Second Edition. Chapman & Hall / CRC.
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