Product Management: Cost Estimation Flashcards
7 cards from real Product Management practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Product Management: Cost Estimation flashcards as text
What is the significance of the 'cone of uncertainty' in product cost estimation?
Answer: It illustrates that estimates are highly inaccurate early on and become more precise as project details emerge
The cone of uncertainty shows that early project estimates can vary widely (±75%), but accuracy improves significantly as scope and design become clearer.
A PM must estimate the cost of a new product with no comparable historical data. Which estimation technique is most appropriate?
Answer: Expert judgment combined with Delphi technique
When no historical data exists, expert judgment combined with the Delphi technique (iterative anonymous expert consensus) provides the most reliable estimate.
What is opportunity cost in product management decision-making?
Answer: The value of the next best alternative foregone when choosing one investment over another
Opportunity cost is the value of the best alternative not chosen — by funding Feature A, you forgo the return Feature B would have provided.
A PM's product has fixed costs of $200K/month and variable costs of $10 per user. At what monthly user count does the product break even if priced at $15 per user?
Answer: 40,000 users
Break-even: $200K = ($15 − $10) × users → $200K = $5 × users → 40,000 users.
Why is it important to separate 'estimate' from 'budget' when planning product costs?
Answer: Estimates reflect expected costs based on available data, while budgets are management-approved spending limits that may include added reserves
An estimate is the calculated expected cost, while a budget is the formally approved amount — which may include reserves or management adjustments above the raw estimate.
Which approach best describes 'progressive elaboration' in cost estimation?
Answer: Refining cost estimates iteratively as more project details and information become available
Progressive elaboration means continuously improving and detailing cost estimates as the project evolves and more information becomes known.
A PM is reviewing a product P&L and notices that customer acquisition cost (CAC) exceeds customer lifetime value (LTV). What is the primary implication for product investment decisions?
Answer: The current unit economics are unsustainable, and the team must reduce CAC or increase LTV before scaling spend
When CAC > LTV, the business loses money on each customer acquired, making scaling the product financially destructive until the economics are improved.