Checking an A/B test until it crosses p < 0.05 can turn a nominal 5 percent false-positive rate into almost 28 percent. I use a seeded simulation to show how large the damage gets and compare the fixes that keep early stopping honest.
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Innovator, futurist, and author Ray Kurzweil ’70 emphasized his optimism about artificial intelligence, and technological progress generally, in a lecture…
As investigations continue into the crash that killed 62 people, more details emerge about the victims.
US 10-year returns daily Treasuries appear to want to test 4%. Going back a few weeks, the 3.6% level was…
