Heat evolved in setting of cement, as a function of its chemical
composition.
Usage
data(cement)
data(cement.miss)
Format
A data.frame with 13 observations on the following 5 variables.
x1
percentage weight in clinkers of 3CaO.Al2O3
x2
percentage weight in clinkers of 3CaO.SiO2
x3
percentage weight in clinkers of 4CaO.Al2O3.Fe2O3
x4
percentage weight in clinkers of 2CaO.SiO2
y
heat evolved (calories/gram)
Details
cement.miss is taken from an example in Little & Rubin's book
on Statistical Analysis with Missing Data (2002), pp.~154, for
demonstrating estimation of multivariate means and variances when
the missing data pattern is monotone. These are indicated by
NA in cement.miss. See the examples section of
monomvn for a re-working of the example from the textbook
Source
Woods, H., Steinour, H. H. and Starke, H. R. (1932)
Effect of composition of Portland cement on heat evolved during hardening.
Industrial Engineering and Chemistry, 24, 1207–1214.
References
Davison, A. C. (2003) Statistical Models. Cambridge University Press.
Page 355.
Draper, N.R. and Smith, H. (1998) Applied Regression
Analysis. Wiley. Page 630.
Roderick J.A. Little and Donald B. Rubin (2002).
Statistical Analysis with Missing Data, Second Edition.
Wilely. Page 154.