sband: Compute a confidence band for the shift function

In WRS: A package of R.R. Wilcox' robust statistics functions

Description

Compute a confidence band for the shift function. Assuming two independent groups are being compared. The default critical value is the approximate .05 critical value.

If flag is F (false), the exact significance level is not computed. If plotit=T, a plot of the shift function is created, assuming that the graphics window has already been activated.

This function removes all missing observations. When plotting, the median of x is marked with a + and the two quaratiles are marked with o.

sm=T, shift function is smoothed using: op!=1, running interval smoother, otherwise use lowess.

Usage

sband(x, y, crit = 1.36 * sqrt((length(x) + length(y))/(length(x) * length(y))), flag = FALSE, plotit = TRUE, sm = TRUE, op = 1, xlab = "First Group", ylab = "Delta", pr = TRUE)

Arguments

x
y
crit
flag
plotit
sm
op
xlab
ylab
pr

WRS documentation built on May 2, 2019, 5:49 p.m.