Project task E has the following estimates: (1)optimistic time - 10 days (2)Pessimistic time - 20 days,and (3)Most likely time - 12 Days.The standard deviation for time using the beta statistical distribution is ________ days.
A)1.5
B)1.67
C)2
D)2.33

Question

Quizplus · Accepted Answer

The formula for standard deviation in beta distribution is:

SD = (Pessimistic - Optimistic) / 6

SD = (20-10) / 6

SD = 1.67 (rounded off to two decimal places)

Therefore, the answer is B.

Project Task E Has the Following Estimates: (1)optimistic Time -