Project management, del 2

Question 1

Vad gäller time to complete an activity In the three time approach?

Answer 1

The time is assumed to follow a Beta distribution

Question 2

Formula for mean completion time of an activity

What does it mean?

Answer 2

Mean completion time of an activity is: t = (a + 4m + b) / 6

a = optimistic completion time estimate
b = pessimistic completion time estimate
m = most likely completion time estimate
t = mean completion time of an activity

Question 3

Formula an activity completion variance

What does it mean?

Answer 3

An activity’s completion time variance is: σ^2=〖((b-a)/6)〗^2

a = optimistic completion time estimate
b = pessimistic completion time estimate
m = most likely completion time estimate

Question 4

Vad är antaget i CPM?

Answer 4

Att normal time to complete an activity, som kan mötas vid normal cost, kan be crashed to reduced time under maximum crashing (maximeras genom extra resurser) for an increased cost

Question 5

Vad är crashing activity times?

Answer 5

The completion time of an activity can be reduced by adding extra resources for an increased cost

Question 6

Formulas för crashing activity times:

Answer 6

Mj = tj – t’j
Kj = (c’j – cj) / Mj

Normal time = tj
Normal cost = cj
Crashed time = t’j
Crashed cost (increased) = c’j
Maximal tidsreduktion = Mj
Cost per unit reduction = Kj (linear)