Rexact {IQCC} | R Documentation |
This function builds a R control chart with exact (probability) limits.
Rexact(x, y, m)
x |
The data to be plotted. |
y |
The data used in phase I to estimate the standard deviation. |
m |
The sample size. |
The exact limits are the alfa/2 and 1-alfa/2 quantiles of the R distribution that are calculated as estimated process sd times the quantiles of the relative range (W=R/sigma) distribution.
Return a R control chart.
Daniela R. Recchia, Emanuel P. Barbosa
data(pistonrings) attach(pistonrings) Rexact(pistonrings[26:40,],pistonrings[1:25,],5)