CC (version 1.0)

LRCC: Lowess-Range-Chart

Description

Trial limits for the Lowess-Range Chart, and an estimator of the process standard deviation. This chart is appropriate for subgroups of size 1.

Usage

LRCC(x, sigma, plotit = FALSE)

Arguments

x

a numeric vector containing the process measurements

sigma

(optional) the standard deviation of the measurements

plotit

logical value indicating whether a plot should be produced

Value

an estimate of the standard deviation and a plot of the chart

References

Braun, W.J. (2002) The LR-chart: An Alternative to the MR-chart.

See Also

xbarRCC

Examples

# NOT RUN {
LRCC(rnorm(10))
# }