Process Variation & Capability Flashcards
6 cards from real SPC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Process Variation & Capability flashcards as text
What is the primary source of common cause variation?
Answer: Normal process variability
Common cause variation is inherent to the process and results from normal, random factors.
What does a Cp value greater than 1.33 typically indicate?
Answer: High process capability
A Cp value above 1.33 suggests the process is capable of meeting specifications with minimal variation.
Which tool is used to determine the spread and centering of a process?
Answer: Capability histogram
A capability histogram displays the process spread relative to specification limits, showing capability and centering.
What does Cpk take into account that Cp does not?
Answer: Process centering
Cpk measures process capability while considering how centered the process is between the specification limits.
Which term describes a process that consistently produces within specification limits?
Answer: Capable
A capable process produces outputs within specification limits, reflecting good performance and low variation.
What does a wide process spread compared to specification limits indicate?
Answer: Low process capability
If process spread exceeds the specification range, the process is likely incapable of consistently meeting quality targets.