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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.
L1
L2
L6
Spc
Specimen, S1, S2, …, S7.
S1
S2
S7
Bat
Batch, B1, B2, B3 (nested within Spc/Lab),
B1
B2
B3
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.
chem, abbey.
chem
abbey