Complete CQE ASQ Materials

The pre-production or pre-service planning process should include the preparation of product and process control plans. These plans outline the necessary steps and controls to ensure that the product meets quality requirements and that the process is capable of producing consistent results.References:

ASQ Quality Press: The Certified Quality Engineer Handbook.

Quality Planning and Analysis by J.M. Juran and Frank M. Gryna.

Short-run Statistical Process Control (SPC) is particularly useful in situations where many different parts are made in small lots. This is because traditional SPC methods may not be effective when production runs are short and the volume of data for individual parts is limited. Short-run SPC techniques allow for effective monitoring and control of processes that produce a variety of parts in small quantities by standardizing and coding data to detect shifts and trends over multiple short runs.References:

Montgomery, D. C. (2009). Introduction to Statistical Quality Control.

ASQ Quality Press: The Certified Quality Engineer Handbook.

In value stream analysis, inspection is typically classified as non-value added. This is because inspection does not directly transform the product or add value from the customer's perspective. Instead, it is an activity that checks for defects or issues, which ideally should be prevented by improving the processes.

References:

Rother, M., & Shook, J. (1999). Learning to See: Value Stream Mapping to Add Value and Eliminate MUDA. Lean Enterprise Institute.

Liker, J.K. (2004). The Toyota Way: 14 Management Principles from the World's Greatest Manufacturer. McGraw-Hill.

The correlation coefficient measures the strength and direction of a linear relationship between two variables. A correlation coefficient of -1.0 indicates a perfect negative correlation, meaning that as one variable increases, the other decreases.

References:

Moore, D.S., McCabe, G.P., & Craig, B.A. (2017). Introduction to the Practice of Statistics. W.H. Freeman.

Montgomery, D.C. (2009). Introduction to Statistical Quality Control. Wiley.