Yesterday, October 20, was the international day of Statistics. I took inspiration from it to select a clip from chapter 7 of my book “Anomaly! Collider physics and the quest for new phenomena at Fermilab“ which attempts to explain how physicists use the concept of statistical significance to give a quantitative meaning to their measurements of new effects. I hope you will enjoy it….
As we near the discussion of the discovery of the top quark, we need to make a digression to explain an important concept used by particle physicists to measure the level of surprise of an observation, i.e., how much are data at odds with a hypothesis. In a nutshell, the statistical significance of an observed Continue reading “What is Statistical Significance?”