Particle Boards Example - Individual Data

Description

Humidity of 30 raw material used to make particle boards for individual control chart.

Usage

data(ss.data.pb1)

Format

A data frame with 30 observations on the following 2 variables.

pb.group

Group id (distinct for each observation)

pb.humidity

Humidity of the particle board

Note

This data set is used in chapter 12 of the book “Six Sigma with R” (see References).

Source

See references.

References

Cano, Emilio L., Moguerza, Javier M. and Redchuk, Andr<c3><83><c2><a9>s. 2012. Six Sigma with R. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York. http://www.springer.com/statistics/book/978-1-4614-3651-5.

Examples

data(ss.data.pb1)
summary(ss.data.pb1)
library(qcc)
pb.groups.one <- with(ss.data.pb1, qcc.groups(pb.humidity, pb.group))
pb.xbar.one <- qcc(pb.groups.one, type="xbar.one")
summary(pb.xbar.one)
plot(pb.xbar.one)

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)

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> library(SixSigma)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/SixSigma/ss.data.pb1.Rd_%03d_medium.png", width=480, height=480)
> ### Name: ss.data.pb1
> ### Title: Particle Boards Example - Individual Data
> ### Aliases: ss.data.pb1
> ### Keywords: cc data
> 
> ### ** Examples
> 
> data(ss.data.pb1)
> summary(ss.data.pb1)
    pb.group      pb.humidity    
 Min.   : 1.00   Min.   : 9.783  
 1st Qu.: 8.25   1st Qu.:10.725  
 Median :15.50   Median :11.666  
 Mean   :15.50   Mean   :11.745  
 3rd Qu.:22.75   3rd Qu.:12.757  
 Max.   :30.00   Max.   :14.150  
> library(qcc)
Package 'qcc', version 2.6
Type 'citation("qcc")' for citing this R package in publications.
> pb.groups.one <- with(ss.data.pb1, qcc.groups(pb.humidity, pb.group))
> pb.xbar.one <- qcc(pb.groups.one, type="xbar.one")
> summary(pb.xbar.one)

Call:
qcc(data = pb.groups.one, type = "xbar.one")

xbar.one chart for pb.groups.one 

Summary of group statistics:
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
  9.783  10.720  11.670  11.750  12.760  14.150 

Group sample size:  30
Number of groups:  30
Center of group statistics:  11.7454
Standard deviation:  1.391386 

Control limits:
      LCL      UCL
 7.571247 15.91956
> plot(pb.xbar.one)
> 
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>