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freddie_mac

8 interview questions available

Implement blocked time-series cross-validation

Design a quasi-experiment for FHFA policy

Compute leakage-safe rolling features in pandas

Choose estimators for panel rent regressions

Design a hierarchical MF delinquency forecasting system

Prove SQL proficiency with concrete outcomes

Design SQL cleaning, mapping, dedupe, and keying

Assess SQL cleaning, mapping, joins, keys, and DDL/DML