##### Scenario Coinbase runs a Super Bowl ad displaying a QR code that links to a promotional offer. ##### Question Estimate how many viewers will scan and use the promo QR code. State all assumptions, data sources, and the step-by-step calculations you would perform. ##### Hints Think of total viewers, device availability, attention rate, scan rate, conversion rate, and historical analogs.

This question evaluates a data scientist's quantitative estimation, funnel modeling, and assumptions-driven reasoning to estimate QR-code scans and promotional redemptions from a televised advertisement.

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What difficulty level is this interview question?

This is a medium difficulty Analytics & Experimentation question, commonly asked during Technical Screen rounds at Coinbase.

What role is this question designed for?

This question is commonly asked for Data Scientist candidates at Coinbase during technical interviews.

Estimate Viewer Engagement with Super Bowl QR Code Promo

Scenario

Coinbase runs a Super Bowl ad displaying a QR code that links to a promotional offer.

Task

Estimate how many viewers will scan the QR code and how many will ultimately use (redeem) the promo. Provide all assumptions, cite plausible data sources, and show step-by-step calculations.

Clarifying Context (assume unless told otherwise)

One national 60-second Super Bowl spot with the QR code clearly scannable on screen for most of the ad (~45 seconds).
U.S. audience only; unique viewers around recent Super Bowl levels.
Promo can be redeemed by both existing and new users. “Scan” = successful QR decode leading to the landing page or app; “Use” = promo redemption (existing users claim or new users complete onboarding and claim).

Hints

Break down by: total viewers, device availability/second-screening, attention rate, scan attempt rate, scan success, page load success, deduplication to unique scanners, and conversion to promo redemption.
Use historical analogs for QR adoption and connected-TV QR engagement.

Clarifying Context (assume unless told otherwise)

One national 60-second Super Bowl spot with the QR code clearly scannable on screen for most of the ad (~45 seconds).

U.S. audience only; unique viewers around recent Super Bowl levels.

Promo can be redeemed by both existing and new users. “Scan” = successful QR decode leading to the landing page or app; “Use” = promo redemption (existing users claim or new users complete onboarding and claim).

Estimate Viewer Engagement with Super Bowl QR Code Promo

Quick Overview

Scenario

Task

Clarifying Context (assume unless told otherwise)

Hints

Solution

Comments (0)

Estimate Viewer Engagement with Super Bowl QR Code Promo

Quick Overview

Scenario

Task

Clarifying Context (assume unless told otherwise)

Hints

Solution

Comments (0)

Estimate Viewer Engagement with Super Bowl QR Code Promo

Quick Overview