P stands for pernicious, and P values are at the root of all (well, most) scientific evil. Of course, I don’t mean evil in the sense of James Bond’s villains.

If the p-value is lower than 0.05, it means that the chance this happened randomly is very small—it’s a 5 percent chance of happening, meaning it would only occur 1 out of 20 times if there ...

Meanwhile, the SPDR S&P 500 Value ETF(SPYV) SPYV is down 12.34% so far this year. MORE FOR YOU The S&P 500 value index recently moved below its 50-day and 200-day moving averages.

In this short video, @damiangarde explains what p-value is, how it is used, and why it is still considered the gold standard for statistical significance in clinical trials.