surfarea: Surface area of silica

In EngrExpt: Data sets from "Introductory Statistics for Engineering Experimentation"

Description

Measurements of the surface area, in m^2/g, of samples of silica, a chemical product with many applications, such as a filler in rubber products. The surface area is a key property of the product.

Format

A data frame with 32 observations on the following variable.

area

a numeric vector

References

Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)

Examples

str(surfarea)
with(surfarea, summary(area))
qqmath(~ area, surfarea, aspect = 1, type = c("g", "p"),
       xlab = "Standard normal quantiles",
       ylab = expression("Surface area " * (m^2/g) *
           " of batches of silica"))
densityplot(~ area, surfarea,
            xlab = expression("Surface area "*(m^2/g)*
                   " of batches of silica"))

EngrExpt documentation built on May 2, 2019, 5:53 p.m.