CPP Quality Assurance & Improvement 2

Question 1

Which statistical tool is used to identify the few causes responsible for the majority of defects in a packaging process?

Accepted Answer

Pareto chart

Answer

A Pareto chart applies the 80/20 rule to rank defect causes by frequency, highlighting the vital few that drive most problems.

Question 2

In a packaging quality system, a 'control limit' differs from a 'specification limit' in that control limits are:

Accepted Answer

Calculated from process data and reflect natural variation

Answer

Control limits are derived statistically from process performance data, while specification limits are externally defined requirements.

Question 3

A packaging line produces seal strength measurements that follow a normal distribution with mean 12 N and standard deviation 1 N. What percentage of seals fall between 10 N and 14 N?

Accepted Answer

95.4%

Answer

Values within ±2 standard deviations of the mean encompass approximately 95.4% of a normal distribution.

Question 4

Which acceptance sampling standard is most commonly referenced in the US packaging industry for attribute inspection?

Accepted Answer

ANSI/ASQ Z1.4

Answer

ANSI/ASQ Z1.4 provides sampling procedures and tables for inspection by attributes and is widely used in US packaging QA.

Question 5

What does the term 'AQL' stand for in the context of packaging quality inspection?

Accepted Answer

Acceptable Quality Level

Answer

AQL (Acceptable Quality Level) is the maximum defect percentage that can be considered satisfactory as a process average.

(CPP) Certified Packaging Professional Practice Test

(CPP) Certified Packaging Professional Practice Test

CPP Quality Assurance & Improvement 2