nlreg (version 1.2-2.2)

metsulfuron: Metsulfuron Methyl Data

Description

The metsulfuron data frame has 40 rows and 3 columns.

Bioassay on the action of metsulfuron methyl, a sulfunylurea herbicide, on a tissue culture of Brassica napus L. The experiment consists of 8 doses and 5 replications at each level.

Usage

data(metsulfuron)

Format

This data frame contains the following columns:

group

indicator variable for each tested dose;

dose

the tested dose (nmol/l);

area

the callus area (\(mm^2\)).

References

Bellio, R., Jensen, J.E. and Seiden, P. (2000). Applications of likelihood asymptotics for nonlinear regression in herbicide bioassays. Biometrics, 56, 1204--1212.

Brazzale, A. R. (2000) Practical Small-Sample Parametric Inference. Ph.D. Thesis N. 2230, Department of Mathematics, Swiss Federal Institute of Technology Lausanne. Section 5.3, Example 7.

Examples

# NOT RUN {
data(metsulfuron)
attach(metsulfuron)
plot(dose, area, xlab = "tested dose (nmol/l)", 
     ylab = "log callus area (mm^2)", log = "y")
detach()
# }