CPT Quality Assurance & Process Control 2

Question 1

A control chart shows several consecutive points trending upward toward the upper control limit. This pattern is called a:

Accepted Answer

Run or trend

Answer

A series of consecutive points moving in the same direction is called a run or trend, indicating a non-random shift in the process.

Question 2

Which sampling method involves dividing a population into groups and randomly selecting samples from each group?

Accepted Answer

Stratified sampling

Answer

Stratified sampling divides the population into subgroups (strata) and samples from each, ensuring representation across all groups.

Question 3

The process capability ratio Cpk differs from Cp because Cpk accounts for:

Accepted Answer

Process centering relative to specification limits

Answer

Cpk measures capability while accounting for how well the process mean is centered between the specification limits, unlike Cp which only measures spread.

Question 4

A fishbone diagram is primarily used to:

Accepted Answer

Identify root causes of a quality problem

Answer

A fishbone (Ishikawa) diagram organizes potential causes of a problem into categories to help identify root causes.

Question 5

In acceptance sampling, the Acceptable Quality Level (AQL) represents:

Accepted Answer

The worst quality level still acceptable to the producer

Answer

AQL is the maximum percent defective that can be considered satisfactory as a process average for acceptance sampling purposes.

(CPT) Certified Production Technician Practice Test

(CPT) Certified Production Technician Practice Test

CPT Quality Assurance & Process Control 2