Civil Engineering MCQAE Level Civil Engineering
The variance of a PERT activity duration is:
Construction ManagementConstruction Materials, Practices, Planning and ManagementHARD
Choose the correct answer
A
(a+4m+b)/6
B
(m-a)/(b-m)
C
((b-a)/6)^2
D
(b+a)^2/36
Correct Answer
C. ((b-a)/6)^2
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PERT activity standard deviation is (b - a)/6, so variance is [(b - a)/6]^2.
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