Median Model Accuracy

A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

hard

Seniority

senior

Problem

Compute the median accuracy for each model (mdl_name). When a model has an even number of records, average the two middle values. Ignore records where accuracy is null. Return results ordered alphabetically by model name.

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.