tb.dilute: Tuberculin dilution assay
Description
The tb.dilute data frame has 18 rows and 3 columns. It contains
data from a drug test involving dilutions of tuberculin.source
Exercises in Applied statistics (1977), part of Exercise~4.15,
Dept. of
Theoretical Statistics,
Aarhus University.Details
The actual dilutions were 1:100, 1:100$10$, 1:1000.
Setting the middle one to 1 and using base-10 logarithms gives
the logdose values.