Machine heads data

Description

Data set of the variability of machine heads in a quality improvement experiment.

Usage

data(heads.data)

Format

A data frame with 30 observations on the following 6 variables.

obs

numeric. Observation number.

periods

factor. Periods factor (P1, ..., P6).

heads

factor. Type of head factor (H1, ..., H5).

days

factor. Day factor (D1 and D2).

shifts

factor. Shift factor (S1, S2, and S3).

resp

numeric. Response.

Source

Box, G. E. P. (1993). "How to Get Lucky". Quality Engineering, Vol. 5, No. 3, pp 517-524.

References

Box G. E. P, Hunter, J. S. and Hunter, W. C. (2005). Statistics for Experimenters II. New York: Wiley.

Examples

data(heads.data)
str(heads.data)
plot(heads.data)

Results

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.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(BHH2)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/BHH2/heads.data.Rd_%03d_medium.png", width=480, height=480)
> ### Name: heads.data
> ### Title: Machine heads data
> ### Aliases: heads.data
> ### Keywords: datasets
> 
> ### ** Examples
> 
> data(heads.data)
> str(heads.data)
'data.frame':	30 obs. of  6 variables:
 $ obs    : int  1 2 3 4 5 6 7 8 9 10 ...
 $ periods: Factor w/ 6 levels "P1","P2","P3",..: 1 1 1 1 1 2 2 2 2 2 ...
 $ heads  : Factor w/ 5 levels "H1","H2","H3",..: 1 2 3 4 5 1 2 3 4 5 ...
 $ days   : Factor w/ 2 levels "D1","D2": 1 1 1 1 1 1 1 1 1 1 ...
 $ shifts : Factor w/ 3 levels "S1","S2","S3": 1 1 1 1 1 2 2 2 2 2 ...
 $ resp   : int  20 14 17 12 22 16 19 16 17 21 ...
> plot(heads.data)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>