A Quality Analyst Wants to Construct a Control Chart for Determining

question 110

Multiple Choice

A Quality Analyst wants to construct a control chart for determining whether three machines,all producing the same product,are under control with regard to a particular quality variable.Accordingly,he sampled four units of output from each machine,with the following results: What is the sample average range based upon this limited sample?

• A)2.0
• B)4.33
• C)5.4
• D)6.0
• E)9.0

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