Process Sigma

Not Reviewed
Equation / Last modified by Administrator on 2016/08/14 07:05
`"Process "sigma = `
Rating
ID
pro.Process Sigma
UUID
907da7d3-5fed-11e6-9770-bc764e2038f2

The Process Sigma calculator compute the process sigma of defects based on the observed total number of defects (tD) and the observed total number of opportunities (tO).  Click HERE for Process Yield .

This is based on the formula for number of standard deviations (sigma), where:

        `sigma = 0.8406 + sqrt(29.37 - (2.221 * log(DPMO)))`

        where DPMO = (tD/tO)  * 1,000,000
        and tD is the total number of defects, and
               tO is the total number of opportunities.

Instructions

Enter the following:

  1. (tD) This is the total defects
  2. (tO) This is the total opportunities