pcmanufact: Personal computer manufacturer data

In qcc: Quality Control Charts

Description

A personal computer manufacturer counts the number of nonconformities per unit on the final assembly line. He collects data on 20 samples of 5 computers each.

Usage

data(pcmanufact)

Format

A data frame with 10 observations on the following 2 variables.

x

number of nonconformities (inspection units)

size

number of computers inspected

References

Montgomery, D.C. (1991) Introduction to Statistical Quality Control, 2nd ed, New York, John Wiley & Sons, pp. 181–182

Examples

data(pcmanufact)
attach(pcmanufact)
summary(pcmanufact)
plot(x/size, type="b")
detach(pcmanufact)

Example output

Package 'qcc' version 2.7
Type 'citation("qcc")' for citing this R package in publications.
       x              size  
 Min.   : 5.00   Min.   :5  
 1st Qu.: 7.00   1st Qu.:5  
 Median :10.00   Median :5  
 Mean   : 9.65   Mean   :5  
 3rd Qu.:11.25   3rd Qu.:5  
 Max.   :16.00   Max.   :5  

qcc documentation built on May 2, 2019, 9:15 a.m.