Risk analysis (probability and impact) in Software Engineering - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is risk analysis in software engineering?

Risk analysis is the process of identifying potential problems that could affect a project and evaluating their likelihood and impact to manage them effectively.

beginner

What does 'probability' mean in risk analysis?

Probability is the chance or likelihood that a specific risk event will happen during a project.

beginner

What does 'impact' mean in risk analysis?

Impact refers to the effect or consequence a risk event would have on the project if it occurs, such as cost increase or delay.

intermediate

How do probability and impact work together in risk analysis?

They combine to help prioritize risks: high probability and high impact risks need more attention than low probability or low impact ones.

intermediate

Give an example of a risk with high probability but low impact.

An example is a minor software bug that happens often but only causes a small inconvenience, not stopping the project.

What does the 'impact' of a risk describe?

A The effect on the project if the risk happens

B The number of people affected

C The chance the risk will happen

D The cost to prevent the risk

Impact is about the effect or consequence on the project if the risk occurs.

If a risk has low probability but high impact, what should you do?

A Focus only on high probability risks

B Ignore it because it is unlikely

C Monitor it and prepare a plan just in case

D Assume it will not happen

Even if unlikely, high impact risks need monitoring and planning.

Which of these is an example of a risk with high probability and high impact?

A A common software crash that stops the project

B A rare typo in documentation

C A small UI color mismatch

D A delayed team lunch

A frequent crash that stops the project is both likely and very impactful.

Why is risk analysis important in software projects?

A To avoid all risks completely

B To identify and manage risks before they cause problems

C To increase project costs

D To delay project deadlines

Risk analysis helps manage risks early to reduce problems.

What two factors are combined to prioritize risks?

A Cost and time

B Project phase and budget

C Team size and skills

D Probability and impact

Probability and impact together show which risks need more attention.

Explain how probability and impact help in managing risks in a software project.

Think about how likely a risk is and how bad it would be if it happens.

Describe an example of a risk with low probability but high impact and how you would handle it.

Consider rare but serious problems like data loss or security breaches.