flourbeetle {VGAM} | R Documentation |
Mortality of Flour Beetles from Carbon Disulphide
Description
The flourbeetle
data frame has 8 rows and 4 columns.
Two columns are explanatory, the other two are responses.
Usage
data(flourbeetle)
Format
This data frame contains the following columns:
- logdose
log10
applied toCS2mgL
.- CS2mgL
a numeric vector, the concentration of gaseous carbon disulphide in mg per litre.
- exposed
a numeric vector, counts; the number of beetles exposed to the poison.
- killed
a numeric vector, counts; the numbers killed.
Details
These data were originally given in Table IV of Bliss (1935) and are the combination of two series of toxicological experiments involving Tribolium confusum, also known as the flour beetle. Groups of such adult beetles were exposed for 5 hours of gaseous carbon disulphide at different concentrations, and their mortality measured.
Source
Bliss, C.I., 1935. The calculation of the dosage-mortality curve. Annals of Applied Biology, 22, 134–167.
See Also
Examples
fit1 <- vglm(cbind(killed, exposed - killed) ~ logdose,
binomialff(link = probitlink), flourbeetle, trace = TRUE)
summary(fit1)