Function coop 

pub fn coop() -> Result<DataFrame, PolarsError>

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, 679-686.

References:

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

See Also:

‘chem’, ‘abbey’.