R: Heat Expended Following Hardening of Portland Cement
cement
R Documentation
Heat Expended Following Hardening of Portland Cement
Description
This data set illustrates the heat expended (calories) from mixtures of four
different ingredients of Portland cement expressed as a percentage by weight.
Usage
data(cement)
Format
A data frame with 13 observations on the following 5 variables.
x1
calcium aluminate.
x2
tricalcium silicate.
x3
tetracalcium alumino ferrite.
x4
dicalcium silicate.
y
calories of heat per gram of cement following 180
days of hardening.
Details
Burnham and Anderson (2002, p. 101) use this data set originally from Woods et
al. (1932) to select among a set of multiple regression models.
Source
Burnham, K. P., Anderson, D. R. (2002) Model Selection and
Multimodel Inference: a practical information-theoretic
approach. Second edition. Springer: New York.
Woods, H., Steinour, H. H., Starke, H. R. (1932) Effect of composition
of Portland cement on heat evolved during hardening. Industrial
and Engineering Chemistry24, 1207–1214.
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
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Type 'demo()' for some demos, 'help()' for on-line help, or
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> library(AICcmodavg)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/AICcmodavg/cement.Rd_%03d_medium.png", width=480, height=480)
> ### Name: cement
> ### Title: Heat Expended Following Hardening of Portland Cement
> ### Aliases: cement
> ### Keywords: datasets
>
> ### ** Examples
>
> data(cement)
> ## maybe str(cement) ; plot(cement) ...
>
>
>
>
>
> dev.off()
null device
1
>