CQI Sampling Plans & Acceptance Sampling 2

Question 1

Consumer's risk (β) in acceptance sampling is the probability of:

Accepted Answer

Accepting a bad lot at the LTPD quality level

Answer

Consumer's risk (β) is the probability that a bad lot at the Lot Tolerance Percent Defective (LTPD) quality level is incorrectly accepted, representing the risk borne by the customer.

Question 2

LTPD stands for:

Accepted Answer

Lot Tolerance Percent Defective

Answer

LTPD (Lot Tolerance Percent Defective) is the poorest quality level that a consumer is willing to accept in an individual lot, typically associated with a consumer's risk of 10%.

Question 3

ANSI/ASQ Z1.9 provides acceptance sampling plans based on:

Accepted Answer

Variables data (actual measurements)

Answer

ANSI/ASQ Z1.9 uses variables (measurement) data to make accept/reject decisions, offering smaller sample sizes than its attributes counterpart Z1.4 for the same protection.

Question 4

Rectifying inspection is a procedure in which:

Accepted Answer

All defective items in rejected lots are screened and replaced with conforming items

Answer

Rectifying inspection requires that rejected lots be 100% inspected and all defectives replaced with good items, which enables calculation of metrics like AOQL.

Question 5

The Average Outgoing Quality Limit (AOQL) represents:

Accepted Answer

The maximum average outgoing quality over many lots with rectifying inspection

Answer

The AOQL is the worst average outgoing quality that will be passed to the consumer over the long run when rejected lots are rectified; it sets an upper bound on average outgoing defect levels.

CQI - Certified Quality Inspector Practice Test

CQI - Certified Quality Inspector Practice Test

CQI Sampling Plans & Acceptance Sampling 2