> economic-style research design If you sample 100 uncorrelated variables looking for significance at 95% confidence, you should find about 5 which are signifi

> economic-style research design If you sample 100 uncorrelated variables looking for significance at 95% confidence, you should find about 5 which are significant. Data mining to produce hypotheses is fraught with danger. You should declare your hypothesis and then go to the data, otherwise your confidence measurement is bogus.