finney44: Toxicity trial for insects
In VGAM: Vector Generalized Linear and Additive Models
finney44 R Documentation
Toxicity trial for insects
Description
A data frame of a toxicity trial.
Usage
data(finney44)
Format
A data frame with 6 observations on the following 3 variables.
pconca numeric vector, percent concentration
of pyrethrins.
hatchednumber of eggs that hatched.
unhatchednumber of eggs that did not hatch.
Details
Finney (1944) describes a toxicity trial of five different
concentrations of pyrethrins (percent) plus a control that were
administered to eggs of Ephestia kuhniella.
The natural mortality rate is large, and a common adjustment
is to use Abbott's formula.
References
Finney, D. J. (1944).
The application of the probit method to toxicity test
data adjusted for mortality in the controls.
Annals of Applied Biology, 31, 68–74.
Abbott, W. S. (1925).
A method of computing the effectiveness of an insecticide.
Journal of Economic Entomology, 18, 265–7.
Examples
data(finney44)
transform(finney44, mortality = unhatched / (hatched + unhatched))
VGAM documentation built on Sept. 18, 2024, 9:09 a.m.
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| finney44 | R Documentation |
Toxicity trial for insects
Description
A data frame of a toxicity trial.
Usage
data(finney44)Format
A data frame with 6 observations on the following 3 variables.
pconca numeric vector, percent concentration of pyrethrins.
hatchednumber of eggs that hatched.
unhatchednumber of eggs that did not hatch.
Details
Finney (1944) describes a toxicity trial of five different concentrations of pyrethrins (percent) plus a control that were administered to eggs of Ephestia kuhniella. The natural mortality rate is large, and a common adjustment is to use Abbott's formula.
References
Finney, D. J. (1944). The application of the probit method to toxicity test data adjusted for mortality in the controls. Annals of Applied Biology, 31, 68–74.
Abbott, W. S. (1925). A method of computing the effectiveness of an insecticide. Journal of Economic Entomology, 18, 265–7.
Examples
data(finney44)
transform(finney44, mortality = unhatched / (hatched + unhatched))
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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