DDT in Kale
A numeric vector of 15 measurements by different laboratories of the
pesticide DDT in kale, in ppm (parts per million) using the multiple
pesticide residue measurement.
C. E. Finsterwalder (1976)
Collaborative study of an extension of the Mills et al
method for the determination of pesticide residues in food.
J. Off. Anal. Chem. 59, 169–171
R. G. Staudte and S. J. Sheather (1990)
Robust Estimation and Testing.
Dataset imported from https://www.r-project.org.