Exam 11: Statistically Based Quality Improvement for Variables

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Nonrandom variation results in a process that is not repeatable.

(True/False)
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Nonrandom variation is centered on a mean and occurs with a consistent amount of dispersion.

(True/False)
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A ________ is used when data are geometrically distributed.

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The ________ reflects a population distribution.

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A ________ subgroup is a group of data that is logically homogeneous.

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Random variation is also referred to as uncontrollable variation.

(True/False)
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The ________ is often used where variation in a process is small.

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The ________ is used to identify slight but sustained shifts in a universe where there is no independence between observations.

(Multiple Choice)
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The moving average chart uses past information to predict what the next process outcome will be.

(True/False)
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The ________ is used for monitoring variables and measurement on a continuous scale.

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Process stability refers to the ability of a process to produce a product that meets specification.

(True/False)
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A process is capable if only common variation is present in the process.

(True/False)
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A(n) ________ is a continuous measurement such as weight, height, or volume.

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Process ________ means that the variation we observe in the process is random variation and not nonrandom variation.

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To ensure that processes are stable, data are gathered in ________.

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A(n) ________ is used when data are hypergeometrically distributed.

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A g chart is useful when data are hypergeometrically distributed.

(True/False)
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The diameter of a mason jar is 3 inches but can be as large as 3.03 inches and as small as 2.97 inches. Twenty five samples of mason jars are taken and it is discovered that these components have a grand mean of 3.01 inches and a standard deviation of 0.02 inches. What is the capability of this process?

(Multiple Choice)
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X chart limits are control limits and not natural limits.

(True/False)
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________ refers to the ability of a process to produce a product that meets specifications.

(Multiple Choice)
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