Process Optimization Tools

Many relate process optimization directly to use of statistical techniques to identify the optimum solution.  This is not true.  Statistical techniques are definitely needed.  However, a thorough understanding of the process is required prior to committing time to optimize it.  Over the years, many methodologies have been developed for process optimization including six sigma, lean manufacturing, and others.  All of these begin by an exercise to create the process map. 

Once the process inputs, outputs and intermediate responses are recognized for each step, one needs to confirm the relationships.  Very frequently, one believes there is a relationship, but upon analysis one may not find a relationship.  A correlation coefficient can help narrow the relationship between inputs and outputs.  Correlation coefficient are derived from linear regression.