What is indifferent quality range? - Metrology & Quality Control

Q.  Which of the following statements is/are true?

1. Probability of acceptance decreases if acceptance number increases, when sampling size is kept constant
2. Indifferent quality range is the range between lot tolerance percent defective and acceptable quality level
3. Operating characteristics curve is the curve plotted between probability of acceptance and indifferent quality range
- Published on 07 Aug 15

a. Only 1
b. Only 2
c. Only 3
d. All the above statements are true

ANSWER: Only 2

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    Discussion

  • Nagendra   -Posted on 13 Feb 21
    good mcqs
  • Sravanthi   -Posted on 27 Oct 15
    - Operating characteristic curve is obtained when probability of acceptance is plotted against percent defectives.

    - Indifferent quality range is the range between lot tolerance percent defective and acceptable quality level.

    - Operating characteristics curve is affected by sample size, acceptance number and lot size. Probability of acceptance increases, as O.C. curve becomes flat when acceptance number increases. If acceptance number is large, the possibility of accepting lots is high.

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