0

Statistical Quality Control Mcqs

Q:

MIL STD 105E is a _________

A) Acceptance sampling plan B) Acceptance sampling system
C) Both Acceptance sampling plan and Acceptance sampling system D) Neither acceptance sampling plan nor system
 
Answer & Explanation Answer: B) Acceptance sampling system

Explanation: The acceptance sampling scheme is a an overall strategy specifying the way in which the sampling plans are to be used. MIL STD 105E is a collection of acceptance sampling schemes. So it’s an acceptance sampling system.

View Answer Discuss

77
Q:

How many revisions have been done in the case of MIL STD 105E?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

Explanation: After the original version of MIL STD 105E been issued in 1950, there have been 4 revisions in it since then, and the latest version was issued in 1989.

View Answer Discuss

41
Q:

MIL STD 105E was first issued in ________

A) 1949 B) 1937
C) 1945 D) 1950
 
Answer & Explanation Answer: D) 1950

Explanation: The standard sampling procedures for inspection by attributes were developed during World War II. So the MIL STD 105E was first issued in 1950.

View Answer Discuss

45
Q:

Lots in the case of acceptance-sampling plan may not be homogeneous.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: It is necessary to have the lots to be homogenous in the case of acceptance sampling. This is done by producing them on same machines by same operators, and keeping the other environmental factors to be the same.

View Answer Discuss

85
Q:

There are necessarily 2 samples of n units taken and checked in the case of double sampling plan.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: In the Double sampling plan, it is not necessary to take two samples. Sometimes we can accept or reject the lot based upon the information from the first lot.

View Answer Discuss

47
Q:

Double-sampling plan is __________

A) Only 2 units are checked B) Only the first and last lot is checked 100%
C) Only two samples of n units are checked (necessarily) D) Only two samples of n units are checked (conditionally)
 
Answer & Explanation Answer: D) Only two samples of n units are checked (conditionally)

Explanation: In the double-sampling plan, there are only two samples of n units are checked. The lot disposition is totally based upon the information from the first and second sample. There may not be two samples necessary to make decision.

View Answer Discuss

107
Q:

What is done in single sampling plan?

A) Only one unit is checked B) Only the first lot is checked 100%
C) Only n samples of 1 unit are checked D) Only one sample of n units is checked
 
Answer & Explanation Answer: D) Only one sample of n units is checked

Explanation: Single-sampling plan is a lot sentencing procedure in which one sample of n units is selected and checked, at random from the lot. Lot is sentenced based upon only this sample.

View Answer Discuss

34
Q:

How many sampling plans are there in the case of acceptance sampling?

A) 1 B) 2
C) 3 D) 5
 
Answer & Explanation Answer: C) 3

Explanation: There are only 3 sampling plans available in the case acceptance sampling, namely: single-sampling plan, double-sampling plan, and multiple-sampling plan.

View Answer Discuss

52