The number of tobacco budworms dying at various doses of pyrethroid
Usage
data(budworm)
Arguments
Format
A data frame with 12 observations on the following 4 variables.
Killed
the number of budworms killed at each dose;
a numeric vector
Number
the number of budworms exposed at each dose;
a numeric vector
Dose
the dose of pyrethroid trans-cypermethrin
in micrograms;
a numeric vector
Gender
the gender of the budworms;
a factor with levels F (female) and M (male)
Details
The data concern the tobacco budworm Heliothis virescens
and the doses of pyrethroid trans-cypermethrin
(to which the moths were beginning to show resistance).
Twenty male and twenty female moths were exposed
at each of six doses of the pyrethroid,
and the number that were killed recorded.