Dataset:  combhair.dat

Source: M.L. Garcia and J. Diaz(1976). "Combability Measurements on
Human Hair," Journal of the Society of Cosmetic Chemists, Vol.27,
pp379-398.

Description: Combability measurements (average of peak and average combing 
loads) for 16 swatches of hair (8 assigned to shampoo A, 8 to B),
before and sfter treatment (shampoo). Five replicates taken on each
swatch before and after treatment.

Variables/Columns

shampoo  1  /* 1=A, 2=B  */
treatment  4  /* 0=Before shampoo,  1=After  */
Swatch number   7-8
run number  11
combability  14-16