Answer it
P1 a4 support bias
4 marksYou mark it yourself against the marking points
A school trains a model to flag students who may need extra reading support. The labels in the training data record which students teachers referred for support over the last ten years. In those years, teachers referred boys much more often than girls who had similar reading scores. On the records from those ten years, the model agrees with the teachers' decisions 92% of the time.
(a) Explain how bias has entered this model. [2]
(b) Explain why the 92% accuracy does not show that the model is fair. [2]
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