A Manager Wishes to Build a 3-Sigma Range Chart for a Process

question 149

Multiple Choice

A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 16.01, and the average range is 5.3. From Table S6.1, the appropriate value of D₃ is 0, and D₄ is 2.115. The UCL and LCL for this range chart are

• A) 33.9 and 11.2
• B) 33.9 and 0
• C) 11.2 and 0
• D) 6.3 and 0
• E) 31.91 and 0.11

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Definitions:

Dependent Variable

In a study or experiment, this is the variable anticipated to vary as a result of alterations in the independent variable.

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Observed Value

The actual value measured or recorded during an experiment or survey.

Dependent Variable

In an experiment, the dependent variable is the variable that is being tested and measured, and is 'dependent' on the independent variable.