The data give the yields from seventy consecutive runs
of a chemical batch process.
After each batch was produced,
some residue may remain
and hence affected the subsequent yields.
There are 70 observations.
Variables:
Yield
The yield of chemical, units unknown
Data Quality:
There are no missing values.
Source:
Hand et al. dataset 114
Notes:
References:
Box, GEP and Jenkins, GM (1970).
Time series analysis,
San Fransisco: Holden-Day, Table 2.1.