Discuss the following problem:
Six Sigma:
Q1. Manually calculate the mean, standard deviation, variance, and median of the following four data sets. Comment on the results.
Q2. Describe the source of measurement variability of a plastic part. Describe other sources of variability if the part were from a cavity of a multi-cavity tool in which there are many multi-cavity tools and many injection molding machines.
Q3. Over time a process has experienced consistent variability, but a larger amount than desired. Should management be told that the process is out of control? Explain.
Q4. A company needs to reduce its product development time to be competitive. Describe a basic strategy for making process improvements.