SPC Process Variation & Capability

Question 1

What is the primary source of common cause variation?

Accepted Answer

Normal process variability

Answer

Operator error

Answer

Machine failure

Answer

Incorrect specifications

Question 2

What does a Cp value greater than 1.33 typically indicate?

Accepted Answer

High process capability

Answer

Out-of-control process

Answer

Excessive rework

Answer

Poor tool calibration

Question 3

Which tool is used to determine the spread and centering of a process?

Accepted Answer

Capability histogram

Answer

Fishbone diagram

Answer

Pareto chart

Answer

Flowchart

Question 4

What does Cpk take into account that Cp does not?

Accepted Answer

Process centering

Answer

Sample size

Answer

Number of operators

Answer

Total cost

Question 5

Which term describes a process that consistently produces within specification limits?

Accepted Answer

Capable

Answer

Corrective

Answer

Variable

Answer

Reactive

Question 6

What does a wide process spread compared to specification limits indicate?

Accepted Answer

Low process capability

Answer

High precision

Answer

Stable process

Answer

Normal variation