Work A Selection-Rate Gap
Compute a selection-rate ratio and explain why it is a screening signal, not a final fairness verdict.
calculation-trail stat-tiles try-node A scholarship AI selects 120 of 500 Group A applicants and 60 of 500 Group B applicants for human review. Selection-rate ratio = lower group selection rate divided by higher group selection rate. The common trap is to treat the ratio as either a final legal or ethical verdict, or as irrelevant because it is simple. It is neither. It is a screening signal that tells you whether deeper fairness review is necessary. Group A rate 120 selected / 500 applicants = 0.24, or 24%. Start with rates, not raw counts, because group sizes may differ. Group…
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