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BA 490 Exam Three Study Guide (Not Actual Exam Questions)

Terms in this set (13)

True or False:
"Process capability" compares "process variability" to the "tolerances."
Answer:
True

Explanation:
Process capability checks whether the process variation is within the acceptable (tolerance) range or not.
True or False:
Taguchi believes that as long as the output is within specifications there is no cost.
Answer:
False

Explanation:
according to Taguchi any deviation from the target has consequences.
True of False:
Run tests are useful in helping to identify nonrandom variation patterns in a process.
Answer:
True

Explanation:
Runs tests are useful to identify non-randomness in patterns.
True of False:
Statistical process control focuses on the acceptability of process output
Answer:
False

Explanation:
SPC focuses on the variability of processes and identifies an out-of-character (non-random) incident. SPC may show a process that is under control but management may look for different output.
True of False:
The constant factors (e.g., A2) needed for establishing the control charts are determined based on number of samples
Answer:
False

Explanation:
factor should be acquired based on number of observations in each sample and not the number of samples.
True of False:
It is reasonable to inspect goods before an irreversible and/or expensive process.
Answer:
True

Explanation:
it is a good idea to have the inspection point before expensive or irreversible process.
True of False:
Range charts and p-charts are both used for variable data.
Answer:
False

Explanation:
P-charts are used with attribute data
8) A control chart used to monitor the process mean is the _____
x-bar chart
A p-chart would be used to monitor _______
the fraction defective
A point which is outside of the lower control limit on an R-chart
should be investigated because an assignable cause of variation might be present
_______ variation is a variation whose cause can be identified
assignable
A shift in the process mean for a measured characteristic would most likely be detected by
x-bar chart
The purpose of control charts is to:
distinguish between random variation and assignable variation in the process
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