Control Chart Calculator for Attributes (Discrete Data)
(Click here
if you need control charts for
variables)
This wizard computes the Lower and Upper Control Limits
(LCL, UCL) and the Center Line (CL) for monitoring the fraction of
nonconforming items or number of nonconformities (defects) using
p
and
c control charts .
More about control charts.
The limits are based on taking a set of
preliminary samples drawn while the process is known to be in control.
The information from these samples is used to estimate the sample
fraction nonconforming (p) or the number of nonconformities in a
sample unit ((c).
Nonconforming items
Nonconformities (defects)