Quant Memo
Statistics/●●●●●

Why ranking three signals by p-value misleads

A researcher ranks three signals by p-value, C (p=0.002p = 0.002) best, D (p=0.01p = 0.01) second, E (p=0.04p = 0.04) worst, and proposes to allocate capital in that order of "strength."

Explain why ranking signals by p-value is not the same as ranking them by the size of their edge, and give a numeric example where the true edges run in the opposite order.

Your answer

This one is open-ended. Work it through, then check your reasoning against the full solution.

More Statistics questions