ss.data.bills | R Documentation |
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.
data("ss.data.bills")
A data frame with 32 observations on the following 3 variables.
a numeric vector identifying a given bill
a character vector for the clerk responsible for the bill
a character vector with the number of errors in the bill
This data set illustrates concepts in the book “Quality Control with R”.
Table 6.1 in the reference below.
Cano, E.L. and Moguerza, J.M. and Prieto Corcoba, M. (2015) Quality Control with R. An ISO Standards Approach. Springer.
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)
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