An X-Bar and R Chart Was Prepared for an Operation

question 3

Multiple Choice

An X-bar and R chart was prepared for an operation using twenty samples with five pieces in each sample; X-bar was found to be 33.6 and R-bar was 6.20. During production, a sample of five was taken and the pieces measured 36, 43, 37, 25, and 38. At the time, this sample was taken:

• A) Both the average and range were within control limits.
• B) Neither the average nor range were within control limits.
• C) Only the average was outside control limits.
• D) Only the range was outside control limits.

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Definitions:

Flange Dimension

The specific measurement related to the size, thickness, or diameter of a flange, which is a projecting flat rim or collar used for attachment.

Seam Weld

A welding technique used to join two pieces of metal together along a continuous line by heating with an electric arc, laser, or other methods.

Weld Symbol

A symbolic representation used in technical drawings to identify the type, location, dimension, and other details of a weld.

Plug Weld

A type of weld used to fill a hole in one component that is to be joined to another component, securing them together.