Co-operative Trial in Analytical Chemistry

Seven specimens were sent to 6 laboratories in 3 separate batches and each analysed for Analyte. Each analysis was duplicated.

coop

Format

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 \(g/kg\).

Source

Analytical Methods Committee (1987) Recommendations for the conduct and interpretation of co-operative trials, The Analyst 112, 679--686.

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

See also

chem, abbey.