+--------+-------------------+
| coop   | R Documentation   |
+--------+-------------------+

Co-operative Trial in Analytical Chemistry
------------------------------------------

Description
~~~~~~~~~~~

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

Usage
~~~~~

::

    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**, 679â€“686.

References
~~~~~~~~~~

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

See Also
~~~~~~~~

``chem``, ``abbey``.
