U_it: Iteration of u control chart for attributes

In XRSCC: Statistical Quality Control Simulation

Iteration of u control chart for attributes

Description

Calculates the iteration i'th for the control limits of c chart using the results obtained in c_gr and previous U_it iteration.

Usage

U_it(prev.results)

Arguments

prev.results

Is a list of previous results obtained by the u_gr function. In other cases, needs more than one iteration, to obtain the true control limits for u chart before take conclusions about the process.

Value

in.control	The under control row list for the u chart
out.control	The out of control row list for the u chart
Iteraciones	The number of iterations, in this function always will be the first and the last one
data.0	The original data frame
data.1	Subsetting the data frame with under control rows
bin	The binary values for out of control equal to one and under control equal to zero
Limites de Control Grafica \emph{u}	The u chart control limits vector
Conclusion del proceso	The same results in a phrase as the bin values

Author(s)

Erick Marroquin

References

Montgomery, D.C. (2005) Introduction to Statistical Quality Control, 5th ed. New York: John Wiley & Sons, ISBN 0-471-65631-3

See Also

p_gr, np_gr, c_gr, u_gr, P_it, NP_it, C_it

Examples

data(udata2)
r1<-u_gr(udata2)
r2<-U_it(r1)

XRSCC documentation built on April 3, 2025, 7:29 p.m.