Top 50 Time Series Interview Questions
The most frequently asked Time Series questions across all roles and companies, ranked by real interview frequency. Updated daily.
Compute daily paid GMV and a 7-day trailing moving average using aggregation + window functions.
Balyasny Asset Management
Amazon Development Center U.S.Build a daily series and compute a 30-day trailing moving average of task bookings using window functions.
TaskRabbit
RBCCalculate 30-day rolling test averages for TÜV SÜD facilities using joins and a time-based window function.
Calculate a 30-day rolling outage-duration average for each PG&E service area using a CTE, join, and window function.
Pacific Gas and ElectricCalculate each rolling average in a price series using a fixed-size sliding window and running sum.
T. Rowe Price
GEP
BinanceMaintain Vercel hit timestamps and count requests in inclusive time ranges using sorted insertion and binary search.
VercelCalculate a zero-risk-free Sharpe ratio from a return series using population volatility and explicit zero-variance handling.
Balyasny Asset ManagementDetect high-frequency price anomalies using a trailing median and median absolute deviation window.
Tudor InvestmentSign up to see every question
Create a free account to unlock this list and practice real interview questions.