Seven specimens were sent to 6 laboratories in 3 separate batches and each analysed for Analyte. Each analysis was duplicated.
coop
This data frame contains the following columns:
Lab
Laboratory, L1
, L2
, …, L6
.
Spc
Specimen, S1
, S2
, …, S7
.
Bat
Batch, B1
, B2
, B3
(nested within Spc/Lab
),
Conc
Concentration of Analyte in \(g/kg\).
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.