Market Sizing Methodology, Case Interview Frameworks, and Design Evaluation Standards

Quantitative Market Sizing Methodology

  • Core Objective: Evaluates structured analytical reasoning, comfort with ambiguity, and clear communication over exact numerical precision.

  • Simplifying Assumptions: Establish boundary cases (e.g., 0%0\% to 100%100\% adoption) and simplify age brackets (e.g., 40%40\%) to streamline mental math.

  • Bottom-Up Model:

    • Baseline: 100,000100,000 residents/city across 100100 target US cities.

    • Adoption: 30%30\% ride-share adoption ×30%\times 30\% autonomous adoption ×20%\times 20\% Waymo share = 6%6\% net share (1,8001,800 riders/city).

    • Annual Volume: 180,000180,000 total riders ×50\times 50 trips/year = 9,000,0009,000,000 rides/year (underestimate due to conservative city counts and sizes).

  • Top-Down Model:

    • Baseline: 330,000,000330,000,000 US population ×50%\times 50\% urban = 165,000,000165,000,000 (rounded to 150,000,000150,000,000).

    • Adoption: 150,000,000×30%×30%×20%=2,700,000150,000,000 \times 30\% \times 30\% \times 20\% = 2,700,000 riders.

    • Annual Volume: 2,700,000×502,700,000 \times 50 trips/year = 135,000,000135,000,000 rides/year.

Market Sizing Best Practices

  • Consumer Rationale: Provide explicit real-world logic for every assumed percentage or threshold.

  • Directional Bias: Clearly identify if the model output represents an overestimate or an underestimate.

  • Execution & Frameworks: Write down intermediate calculation steps and stick to standard frameworks (Top-Down or Bottom-Up).

Strategic Case Analysis: Customer Retention & Market Expansion

  • Retention Strategies: Mitigate safety concerns with AI safety comparative data and optimize fleet dispatch wait times.

  • MECE Framework:

    • User Engagement: Loyalty programs and automated re-engagement notifications.

    • Strategic Partnerships: Integrations with venue hubs, airports, and mapping platforms.

    • Value-Add & Positioning: Marketing centered on safety, productivity, and convenience.

  • Alternative Frameworks: 4 Ps (Product, Price, Place, Promotion) and Push vs. Pull dynamics.

  • Geographic Expansion: Target regions with severe weather, low sidewalk infrastructure/walkability, and address luxury perceptions through value retail partnerships.

  • Case Resolution: Validate prompt alignment, summarize core pillars, and highlight operational risks and failure modes.

Interview Execution & Design Evaluation Standards

  • Core Principles: Maintain strict MECE discipline, structure responses on paper, and use empirical evidence.

  • Design Parsing (Wayfair Case): Balance navigation features against content overload; focus on critical design reasoning over personal preference.

  • Design Thinking Framework: Empathize →\rightarrow Define →\rightarrow Ideate →\rightarrow Prototype →\rightarrow Test.