Six Sigma SPC OEM Products
Six Sigma and SPC (Statistical Process Control) Software
Six Sigma SPC - 2070 W. Washington St. #5
Springfield IL 62702 Ph: 217.698.0063
6 Sigma Statistical Process Control (SPC) Software for Windows
If a produced unit can have a number of
different defects, then demerits can be assigned
to each type of defect and product quality measured in terms of demerits.
As an AQL is an acceptable level, the probability
of acceptance for an AQL lot should be high. (Typical values between
92.74% to 99.999996% for six sigma, see
compares to PPM for value reasons)
Some sources characterize an acceptable
quality level as the highest percent defective
that should be considered reasonable as the process average.