Electrode Manufacture

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Description

Comparison of eletrode measurements from two machines

Usage

1

Format

A data frame with 100 observations, 50 from each machine, on the following 5 variables.

Machine

a factor with levels 1 2

X1

Total diameter

X2

Probe diameter

X3

Total height

X4

Basal height

X5

Internal diameter

Details

See Figure 5.3.3 in Flury 1997, or the orginal figure 7.20 in Flury and Riedwyl for a better explaination of the five measurements. The actual data presented are linear transformations of the original variables (for reasons of commercial confidentiality).

Source

Flury, B. and H. Riedwyl (1988) Multivariate Statistics: A practical approach. London: Chapman and Hall

References

Flury, B.D. (1997) A First Course in Multivariate Statistics New York: Springer

Examples

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data(electrode)
## Not run: pairs(apply(electrode[,-1], 2, jitter, 2),
    lower.panel = function(x, y){ points(x, y,
    pch = unclass(electrode[,1]),
    col = as.numeric(electrode[,1]))},
    main = "Pairwise scatter plots for Electrode data")
## End(Not run)