Paypal Data Scientist Analytics & Experimentation Interview Questions
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Master A/B Testing: Key Concepts and Methodologies Explained
A/B Testing and Causal Inference: Core Concepts and Practice Scenario You are a data scientist interviewing for a role working on an online product. Y...
Analyze Transactions for Risk and Implement Mitigation Strategies
Real-Time Payments Risk: Accept or Decline, With Immediate Mitigations Scenario Two new card transactions arrive, and you must decide in real time whe...
Design an A/B for ATO rule
Experiment Design Case: Real-time ATO Rule for PayPal/Venmo Context: You are designing and analyzing an online experiment to estimate the net business...
Analyze Success Metrics and Diagnose Crypto Feature Issues
Post-Launch Evaluation: Crypto Trading Feature Context You are a Data Scientist evaluating the post-launch performance of a crypto-trading feature int...
Define Success with Contact Syncing for Growth and Evaluation
Using "% of users with contacts synced" as a growth driver Context You are a data scientist at a consumer fintech app with strong network effects in p...
Explain P-Value and Errors in A/B Testing
A/B Test Design and Analysis: Core Concepts Scenario You are advising on the design and analysis of an A/B test for a new product feature (e.g., a che...
Boost User Login Rate: Key Metrics to Monitor
Scenario You are the product data scientist responsible for improving a consumer fintech platform's user authentication experience and increasing the ...
Design and Analyze A/B Test for Cashback Program
A/B Test Design: Checkout Cashback Program (PayPal) Scenario PayPal plans to launch a checkout cashback program (e.g., "Get 1–5% back when you pay wit...
Design A/B Test to Measure PayPal Cashback Value
Scenario PayPal plans to offer a targeted cashback incentive for purchases at Walmart. You need to design an A/B test that convincingly demonstrates t...
Assess card transactions and plan risk strategy
Card Fraud Decisions and Cold‑Start Risk Strategy Context You are designing the first version of card risk controls for an online checkout platform. Y...