UextII {IQCC} | R Documentation |
This function builds an improved version of the Shewhart u chart where the traditional normal-based control limits are corrected for the non-normality of the u-statistic for phase II.
UextII(x, sizes, lambda, length)
x |
The data to be plotted. |
sizes |
A value or a vector of values specifying the sample sizes associated with each group. |
lambda |
The estimate of lambda. |
length |
The length of the data. |
To use this function it is necessary to have the information about the UextI.
Return the improved U chart.
Daniela R. Recchia, Emanuel P. Barbosa
data(moonroof) attach(moonroof) uexI<-UextI(x=yi[1:17],sizes=ni[1:17],par=ui[1:17],17) UextII(x=yi[18:34],sizes=ni[18:34],lambda=uexI[1],length=17)