CQI Sampling Plans & Acceptance Sampling

Question 1

What does AQL stand for in acceptance sampling per ANSI/ASQ Z1.4?

Accepted Answer

Acceptance Quality Limit

Answer

Allowable Quality Level

Answer

Average Quality Loss

Answer

Adjusted Quality Level

Question 2

In a single sampling plan, a lot is rejected when the number of defectives found in the sample is:

Accepted Answer

Greater than the acceptance number (Ac)

Answer

Equal to the acceptance number (Ac)

Answer

Less than or equal to the acceptance number (Ac)

Answer

Equal to half the rejection number (Re)

Question 3

The Operating Characteristic (OC) curve of a sampling plan illustrates the relationship between:

Accepted Answer

Probability of lot acceptance and incoming lot quality

Answer

Sample size and lot size

Answer

AQL and LTPD values

Answer

Producer's risk and consumer's risk

Question 4

The producer's risk (α) in acceptance sampling is the probability of:

Accepted Answer

Rejecting a lot that meets the AQL

Answer

Accepting a lot at the LTPD quality level

Answer

Finding zero defects in the sample

Answer

Accepting a lot with defects above the AOQL

Question 5

In acceptance sampling, the AQL represents:

Accepted Answer

The worst average process quality level still considered acceptable

Answer

The maximum defect level permitted in any single lot

Answer

The quality level at which 50% of submitted lots are accepted

Answer

The minimum sample size required for inspection

Question 6

In a double sampling plan, if the number of defectives in the first sample falls between Ac1 and Re1, the inspector should:

Accepted Answer

Draw a second sample and combine results

Answer

Accept the lot immediately

Answer

Reject the lot immediately

Answer

Place the lot on hold pending supplier response

Question 7

Under ANSI/ASQ Z1.4, which inspection level is used as the default unless otherwise specified?

Accepted Answer

Level II

Answer

Level I

Answer

Level III

Answer

Level S-1