A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01 inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch.
a. Calculate the process capability index for this example.
b. What does this figure tell you about the process?

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A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01 inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch.
a. Calculate the process capability index for this example.
b. What does this figure tell you about the process?

Leave a Reply

Your email address will not be published. Required fields are marked *