Tech Screening

Class imbalance

Fraud prevalence is 0.2 percent. Which metrics and sampling choices would you use, and what could mislead you?

What this task practices

Class imbalance is a tech screening interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as easy difficulty. It focuses on Validation, Tradeoffs, Technical Reasoning. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.