Question

A project’s critical path is composed of activities A (variance .33), B (variance .67), C (variance .33), and D (variance .17). What is the standard deviation on the critical path?

Answer 1

Answer:

The standard deviation on the critical path = 0.834

Step-by-step explanation:

Variance of activity A ($V_{1}$) = 0.33

Variance of activity B ($V_{2}$) = 0.67

Variance of activity C ($V_{3}$) = 0.33

Variance of activity D ($V_{4}$) = 0.17

Thus the standard deviation on the critical path ($\alpha ^{2}$) = $V_{1} ^{2}$ + $V^2_{2}$ +  $V^2_{3}$ + $V^2_{4}$

                                                                             $\alpha ^{2}$  = $0.33^{2}$ + $0.67^{2}$ + $0.33^{2}$ + $0.17^{2}$

                                                                             $\alpha ^{2}$ = 0.6956

                                                                             $\alpha$ = 0.834

The standard deviation on the critical path = 0.834