"xbar"
and plot the histogram.process.capability(object,spec.limits, target, std.dev, nsigmas, confidence.level = 0.95, breaks = "scott", add.stats = TRUE, print = TRUE, digits = getOption("digits"), restore.par = TRUE)
"xbar"
NA
.NULL
, otherwise the target is set at the middle value bewteen specification limits.hist
for more details. par
settings must be restored. If you need to add points, lines, etc. to a chart set this to FALSE
.qcc
data(pistonrings)
attach(pistonrings)
diameter <- qcc.groups(diameter, sample)
q <- qcc(diameter[1:25,], type="xbar", nsigmas=3, plot=FALSE)
process.capability(q, spec.limits=c(73.95,74.05))
process.capability(q, spec.limits=c(73.95,74.05), target=74.02)
process.capability(q, spec.limits=c(73.99,74.01))
process.capability(q, spec.limits = c(73.99, 74.1))
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