If the most optimistic and pessimistic times for a task are 6 and 21 days respectively,then the variance for the duration of the activity is ______.
A)5.25
B)6.25
C)7.25
D)8.25

Question

Quizplus · Accepted Answer

We can calculate the variance using the formula:

Variance = [(pessimistic time - optimistic time) / 6]^2

Substituting the given values, we get:

Variance = [(21 - 6) / 6]^2
Variance = (15 / 6)^2
Variance = 2.5^2
Variance = 6.25

Therefore, the variance for the duration of the activity is 6.25.

If the Most Optimistic and Pessimistic Times for a Task