SixSigma (version 0.9-2)

ss.data.bills: Errors in bills data set

Description

This data set contains the number of errors detected in a set of bills and the name of the person in charge of the bill.

Usage

data("ss.data.bills")

source

Table 6.1 in the reference below.

Details

This data set illustrates concepts in the book ``Quality Control with R''.

References

Cano, E.L. and Moguerza, J.M. and Prieto Corcoba, M. (2015) Quality Control with R. An ISO Standards Approach. Springer.

Examples

data(ss.data.bills)
str(ss.data.bills) 
barplot(table(ss.data.bills$clerk), 
    main = "number of invoices")
aggregate(errors ~ clerk, ss.data.bills, sum)