GMC Data Analysis & Decision Making 3

Question 1

You run two simultaneous A/B tests on the same landing page. What is the primary risk of this approach?

Accepted Answer

Interaction effects between experiments that contaminate results

Answer

Simultaneous tests on the same page can interact, making it impossible to attribute performance changes to a single experiment.

Question 2

Which of the following is an example of a vanity metric in growth marketing?

Accepted Answer

Total registered users without accounting for active users

Answer

Total registered users looks impressive but ignores engagement and activity, making it a vanity metric that doesn't predict business health.

Question 3

A company's DAU/MAU ratio is 0.15. What does this indicate?

Accepted Answer

15% of monthly users engage daily, suggesting low stickiness

Answer

A DAU/MAU ratio of 0.15 means only 15% of monthly active users return daily, indicating low product stickiness.

Question 4

When should a growth team use qualitative data alongside quantitative analytics?

Accepted Answer

When they need to understand the 'why' behind the numbers

Answer

Qualitative data (interviews, session recordings) explains user motivations and context that quantitative metrics alone cannot reveal.

Question 5

A growth experiment shows a 5% lift in revenue but a 3% decline in NPS. How should the team proceed?

Accepted Answer

Evaluate both metrics against long-term LTV and retention projections before deciding

Answer

Both revenue lift and NPS decline have long-term implications; the decision requires weighing trade-offs against retention and LTV data.

(GMC) Growth Marketing Certification Practice Test