sporm (version 1.1.1)

dd.est: Dabrowska-Doksum's estimate of theta

Description

Returns the estimate of the proportionality parameter \(\theta\) of Dabrowska and Doksum (1988)

Usage

dd.est(x, y)

Arguments

x,y

Vectors containing the data values of the two samples \(x_1,\ldots,x_m\) and \(y_1,\ldots,y_n\).

Value

Dabrowska-Doksum's estimate of theta

Details

See the references below.

References

Zhong Guan and Cheng Peng (2011), "A rank-based empirical likelihood approach to two-sample proportional odds model and its goodness-of-fit", Journal of Nonparametric Statistics, to appear.

D. M. Dabrowska and K. A. Doksum (1988), Estimation and testing in a two-sample generalized odds-rate model, J. Amer. Statist. Assoc. 83 pp. 744--749.

Examples

# NOT RUN {
# Radar tube life data
z<-RadarTube$Days
v<-RadarTube$Type
x<-z[v==1]; y<-z[v==2]
# Dabrowska-Doksum's estimate of theta
dd.est(x,y)
dd.est(y,x)
# }