CRE Quality Control Procedures 4

Question 1

Which corrective action methodology uses the 8D (Eight Disciplines) approach?

Accepted Answer

A structured team-based problem-solving process originally developed by Ford Motor Company

Answer

A supplier qualification audit framework from ISO/TS 16949

Answer

A software defect tracking system used in aerospace

Answer

A lean manufacturing waste elimination technique

Question 2

In statistical process control, the term 'rational subgrouping' means:

Accepted Answer

Grouping samples so variation within subgroups reflects only common cause variation

Answer

Selecting the largest possible sample to improve statistical power

Answer

Dividing the process into equal time intervals for sampling

Answer

Grouping products by operator to isolate assignable causes

Question 3

What is the primary purpose of a Pre-Control chart?

Accepted Answer

To provide simple setup verification and ongoing process monitoring without requiring statistical training

Answer

To replace X-bar and R charts in high-volume manufacturing

Answer

To plot individual measurements against engineering tolerances

Answer

To detect small process shifts using CUSUM methodology

Question 4

A lot disposition of 'use-as-is' (UAI) requires:

Accepted Answer

Engineering review and written approval that the nonconforming item meets fit, form, and function requirements

Answer

Only the quality inspector's signature on the nonconformance report

Answer

100% re-inspection of the lot before release

Answer

Automatic rejection and return to supplier

Question 5

Which sampling scheme is appropriate when process quality is expected to be consistent and lot-by-lot inspection is too costly?

Accepted Answer

Skip-lot sampling

Answer

Tightened inspection

Answer

Double sampling

Answer

Sequential sampling

Question 6

What does ANSI/ASQ Z1.4 govern?

Accepted Answer

Sampling procedures and tables for inspection by attributes

Answer

Sampling procedures for inspection by variables

Answer

Calibration requirements for measurement systems

Answer

Control chart selection criteria for manufacturing processes

Question 7

In quality control, what is the purpose of a CUSUM (Cumulative Sum) chart compared to a standard X-bar chart?

Accepted Answer

CUSUM detects small, sustained process shifts more quickly by accumulating deviations from the target

Answer

CUSUM is used exclusively for attribute data while X-bar handles variables data

Answer

CUSUM eliminates the need for rational subgrouping

Answer

CUSUM adjusts control limits automatically for seasonal variation