The Middle of the Missing

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

The ML feature store records a null percentage for each feature, though many features were never measured. Among features whose data type is float-based, find the null percentage sitting in the middle of the recorded values.

Summary

Across the float features, how much of the data typically goes missing?

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