Instacart Data Scientist Analytics & Experimentation Interview Questions
Master your tech interview with our curated database of real questions from top companies.
Measure Ultrafast Delivery's Impact Using Synthetic Control Method
Scenario Instacart launched Ultrafast Delivery in Miami two months ago and wants to measure its causal impact on user order volume. Assume you have pa...
Investigate Instacart Revenue Decline Using Weekly Data
Scenario You are the on-call Data Scientist for Instacart. This week’s total revenue is down 4% versus the prior week. Initially, you only have access...
Recommend and validate a budget allocation strategy
Using insights you would derive from the SQL task (top advertiser by total spend; most profitable program by net profit and by margin), propose a conc...
Evaluate Miami Ultrafast impact on orders
Instacart launched an Ultrafast delivery feature in Miami two months ago. You have weekly orders per geo for the past 52 weeks; Miami is treated from ...
Diagnose 4% weekly revenue drop using history
You only have a single table weekly_revenue(week_start_date DATE, revenue_usd NUMERIC) containing the last 104 weeks for Instacart. A DS reports that ...
Diagnose Sunday Miami same‑day outages
Marketplace stability case: same‑day disablement on Sunday afternoons (Miami) Context Instacart offers two fulfillment modes: - Same‑day delivery (rea...
Use regression vs cohorts for A/B estimation
Regression-adjusted estimation of treatment effects for contribution per order Context You are analyzing an A/B test at the order level. The outcome i...
Compute duration and stopping rules correctly
Experiment Runtime Planning: Same‑Day Delivery Attach Rate You are planning an A/B test on the same‑day delivery attach rate (the proportion of eligib...
Analyze A/B test with revenue–cost tradeoffs
A/B Test: Same‑Day Delivery Checkout Change You are evaluating a checkout UI change that promotes same‑day delivery. The experiment is a standard two‑...
Diagnose and fix low conversion rigorously
Diagnose a Checkout Conversion Drop After a Promo Banner Launch Scenario Week-over-week, checkout conversion fell from 42% to 35% after a new promo ba...