問題文
An agricultural cooperative's loan scheme uses a model to assess applications. Its fairness policy requires that the approval rate be equal across regions and that the rate of wrongly refused applications also be equal across regions. The regions differ in average holding size. An auditor examines the policy. Which observation is most appropriate?
選択肢
- Because removing the attribute is the direct way to prevent the outcome from depending on it and avoids the need to choose between two competing definitions of fairness altogether, the policy should be replaced with a requirement that the model not use the region as an input.
- When the underlying rates of repayment differ between the groups, those two requirements cannot both be satisfied, so the cooperative has to decide which one governs and record why.
- The policy is sound because both of its requirements express fairness, and a model that is genuinely fair will satisfy any measure of fairness that is applied to it in practice by the cooperative.
- Since the cooperative has set a clear standard and the auditor's role is to test against the standard as written rather than to question its internal consistency, the policy is sound and the auditor should test compliance with it by computing both figures and reporting any region where either one falls outside the agreed tolerance.