Seven specimens were sent to 6 laboratories in 3 separate batches and each analysed for Analyte. Each analysis was duplicated.
This data frame contains the following columns:
L1
,
L2
, ...,
L6
.
S1
,
S2
, ...,
S6
.
B1
,
B2
,
B3
(nested within
Spc/Lab
),
Analytical Methods Committee (1987) Recommendations for the conduct and interpretation of co-operative trials, The Analyst 112, 679-686.