Qm
Statistics

New risk dashboard, then profits rose. Credit it?

control-groupcausal-inferencebacktesting

A trading desk installs a new risk dashboard at the start of the second quarter. Over that quarter its profit and loss is noticeably better than the first quarter, and the head of desk wants to roll the dashboard out firm wide.

Why is "P&L improved after we installed it" weak evidence, and what comparison is needed?

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