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Evaluate Groupon's Impact on Restaurant's Profitability and Strategy

Last updated: Jun 15, 2026

Quick Overview

A Capital One data-science onsite case: a restaurant owner decides whether to run a Groupon-style voucher deal. It tests unit-economics and cost-volume-profit reasoning -- baseline profit, voucher break-even spend, contribution margins under commission, and interpreting why higher volume and check size can still cut profit.

  • medium
  • Capital One
  • Analytics & Experimentation
  • Data Scientist

Evaluate Groupon's Impact on Restaurant's Profitability and Strategy

Company: Capital One

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Onsite

##### Scenario You own a restaurant, and a Groupon-style deals website proposes selling discount vouchers (coupons) for your venue. You must decide whether partnering with the site improves profitability, then quantify the impact under several demand and pricing assumptions. Use these baseline operating numbers throughout: - 20 tables per day - $30 average spend (menu check) per table - Variable cost = 40% of menu spend - Fixed cost = $100 per day ##### Question 1. **Qualitative factors.** What business and financial factors (price elasticity, incrementality vs. cannibalization, capacity/timing, customer acquisition and lifetime value, brand impact, deal terms, etc.) would you evaluate before deciding to partner with the coupon site? 2. **Quantitative factors.** What quantitative levers would you model (per-segment contribution margins, redemption share, break-even spend, sensitivity to commission/check size)? 3. **Baseline profit.** Compute the current daily profit with no partnership. 4. **Break-even spend.** A voucher sells for $15 and is treated as $30 of in-restaurant credit; the site keeps a 40% commission. Any spend above the voucher face value is paid by the customer at the point of sale and is not commissionable. On a marginal basis, what minimum average spend per voucher table is needed to break even? (Also state the equivalent break-even if instead the 40% commission is applied to the full check value.) 5. **Initial decision.** Based on that break-even, would you join the site? Justify your answer. 6. **New scenario.** After joining you observe: 25 tables/day, of which 10 use a voucher; average spend rises to $36; variable cost still 40%; fixed cost still $100; voucher value $15; commission 40%. Compute the new total daily profit, and decide whether to keep working with the site. 7. **Interpretation.** Explain why profit can move in either direction even though both table count and average spend increased. 8. **Improvement tactics.** If the deal must run, suggest concrete tactics to raise profitability.

Quick Answer: A Capital One data-science onsite case: a restaurant owner decides whether to run a Groupon-style voucher deal. It tests unit-economics and cost-volume-profit reasoning -- baseline profit, voucher break-even spend, contribution margins under commission, and interpreting why higher volume and check size can still cut profit.

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Capital One logo
Capital One
Jul 12, 2025, 6:59 PM
Data Scientist
Onsite
Analytics & Experimentation
97
0
Scenario

You own a restaurant, and a Groupon-style deals website proposes selling discount vouchers (coupons) for your venue. You must decide whether partnering with the site improves profitability, then quantify the impact under several demand and pricing assumptions.

Use these baseline operating numbers throughout:

  • 20 tables per day
  • $30 average spend (menu check) per table
  • Variable cost = 40% of menu spend
  • Fixed cost = $100 per day
Question
  1. Qualitative factors. What business and financial factors (price elasticity, incrementality vs. cannibalization, capacity/timing, customer acquisition and lifetime value, brand impact, deal terms, etc.) would you evaluate before deciding to partner with the coupon site?
  2. Quantitative factors. What quantitative levers would you model (per-segment contribution margins, redemption share, break-even spend, sensitivity to commission/check size)?
  3. Baseline profit. Compute the current daily profit with no partnership.
  4. Break-even spend. A voucher sells for 15andistreatedas15 and is treated as 15andistreatedas 30 of in-restaurant credit; the site keeps a 40% commission. Any spend above the voucher face value is paid by the customer at the point of sale and is not commissionable. On a marginal basis, what minimum average spend per voucher table is needed to break even? (Also state the equivalent break-even if instead the 40% commission is applied to the full check value.)
  5. Initial decision. Based on that break-even, would you join the site? Justify your answer.
  6. New scenario. After joining you observe: 25 tables/day, of which 10 use a voucher; average spend rises to 36;variablecoststill4036; variable cost still 40%; fixed cost still 36;variablecoststill40 100; voucher value $15; commission 40%. Compute the new total daily profit, and decide whether to keep working with the site.
  7. Interpretation. Explain why profit can move in either direction even though both table count and average spend increased.
  8. Improvement tactics. If the deal must run, suggest concrete tactics to raise profitability.

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