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Need help on Quality question

Submitted by GoldenKnight on Fri, 10/14/2011 - 13:56

Which of the following is least true?
   
A)
Pareto diagrams typically identify the 20% of all possible root causes that are responsible for 80% of the problems.
   
B)
In project QC, both product-related deliverables and project management deliverables are monitored.
   
C)
Statistical sampling means that inspection of only 50%, instead of 100% of the population, reduces testing time by half.
   
D)
Prevention over inspection is a project quality concept.

 

 

The answer guide says the correct answer is C).

That doesn't make sense to me.  Can anyone help me understand this?

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Yes C is correct. A is true

Submitted by harishgulati on Fri, 10/14/2011 - 14:31.

Yes C is correct.

A is true for Pareto

B is correct as well bcoz you monitor both product and project deliverable

D is also correct coz that is the quality concept.

C is incorrect becoz stats sampling doesn't specifically say about how much % of sampling is good (like in example 50% ) without knowing the total polouation. And you can not necessary conclude that it surely reduces testing time by half, hence incorrect.

Agree

Submitted by gabrielroj on Fri, 10/14/2011 - 14:43.

 totally agree

Right

Submitted by krantikumar50 on Fri, 01/27/2012 - 17:39.

C is the wrong option amongst ABCD, hence its right.

 

KK

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