CfE Maths Hub

Question 1

In an activity network, what does a dependency show?

activities and dependencies

One activity must happen before anotherThe chart must be a bar chartThe activity has no durationThe project has no risk

Question 2

Use PERT with optimistic 2, likely 5 and pessimistic 8.

PERT estimates

Your answer

Question 3

Find float if earliest start is 6 and latest start is 9.

float

Your answer

Question 4

What is true about a critical activity?

critical path

It is always the cheapest taskIt has no durationIt can be delayed freelyIt has zero float

Question 5

Expected value is best described as:

expected value

A long-run average using probabilitiesThe same as floatA guaranteed outcomeThe largest possible value

Question 6

For mixed revision, what makes a Higher Applications answer stronger?

interpreting decisions

Ignoring riskA result explained for the project or decisionA number with no contextChoosing the first option listed

Question 7

Which chart is best for showing activities across a timeline?

Gantt charts

Gantt chartPie chartVenn diagramBox plot

Question 8

Which activity is critical?

critical path

An activity with the biggest cost onlyAn activity with zero floatAn activity with no dependencies onlyAn optional activity

Question 9

Find expected value for 0.25 chance of 200 and 0.75 chance of 40.

expected value

Your answer

Question 10

What should be considered in a risk decision besides expected cost?

risk

Likelihood and impactOnly alphabetical orderNothing elseOnly the shortest label

Question 11

During a forward pass, if two predecessor activities finish at 6 and 9, what earliest start should be used?

critical path

69153

Question 12

Why is a PERT estimate not a guaranteed time?

PERT estimates

It has no calculationIt ignores all likely timesIt is based on uncertain estimatesIt is always the shortest time

Planning and Decision Making mixed revision quiz

Check your understanding

In an activity network, what does a dependency show?

Use PERT with optimistic 2, likely 5 and pessimistic 8.

Find float if earliest start is 6 and latest start is 9.

What is true about a critical activity?

Expected value is best described as:

For mixed revision, what makes a Higher Applications answer stronger?

Which chart is best for showing activities across a timeline?

Which activity is critical?

Find expected value for 0.25 chance of 200 and 0.75 chance of 40.

What should be considered in a risk decision besides expected cost?

During a forward pass, if two predecessor activities finish at 6 and 9, what earliest start should be used?

Why is a PERT estimate not a guaranteed time?