Capability Study
As mentioned in the course, there are two ways to make a bad part, or to make for an unhappy customer experience when dealing with continuous data. Either the process variation centering is off, or the dispersion (fatness, or slop in the process) is too wide. A capability study will tell you with two numbers represented by either Cp Cpk, or Pp Ppk whether your process is capable of meeting customer requirements in either the short term or the longer-term.