Compressibility of Rubber

The specific volume of natural rubber was measured at four values of temperature and six values of pressure. Is there any evidence that volume is not an additive relation with temperature and pressure?

Usage

Rubber

Format

a 4 x 6 matrix, where the cell values are the specific volume (in cubic centimeters per gram) of peroxide-cured rubber. The row and column variables are:

• Temperature, in degrees Celsius

• Pressure, in kg / cm^2 above atmospheric pressure.

Source

Wood, L. A. & Martin, G. M. (1964). "Compressibility of natural rubber at pressures below 500kg/cm^2", Journal of Research of the National Standards Bureau–A. Physics & Chemistry, **68A**, 259–268.

References

Emerson, J. D. & Wong, G. Y. (1985). "Resistant Nonadditve Fits for Two-Way Tables". In Hoaglin, D. C., Mosteller, F., & Tukey, J. W. (Eds.). Exploring data tables, trends and shapes. John Wiley Sons. Ch. 3, Table 3.1.

Examples

data(Rubber)
#> Warning: data set 'Rubber' not found
# scale the response to avoid small decimals
rub <- 10000*Rubber
#> Error: object 'Rubber' not found
rubfit <- twoway(rub, "median")
#> Error: object 'rub' not found
plot(rubfit)
#> Error: object 'rubfit' not found