xbarII {IQCC} | R Documentation |
Builds the x-bar control chart for phase II.
xbarII(x, x2bar, sigma, sizes)
x |
The data to be plotted. |
x2bar |
The mean of means. |
sigma |
The standar deviation of the data. |
sizes |
A value or a vector of values specifying the sample sizes associated with each group. |
To use this function it is necessary to have the output given by the function XbarI.
Return a x-bar control chart for phase II.
Daniela R. Recchia, Emanuel P. Barbosa
data(pistonrings) xI<-xbarI(pistonrings[1:25,]) xbarII(pistonrings[26:40,],xI[[1]],xI[[2]])