Loading...
Latency Variance and Std Dev
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- junior, mid
Problem
For successful API calls (status 200), compute the mean latency, variance, and standard deviation.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.