χ² For Experimental Physicists

A widely used tool in the scientific community, Chi Squared is a common method for evaluating the "goodness of fit" for a model to some measured set of data. This talk will discuss the principles, statistics, implementation, and limitations of Chi Squared. It will also cover confidence levels and confidence intervals, how they relate to Chi Squared, and how to properly quote their results in papers. This is a valuable topic for undergraduates both to help understand other researcher's results, and vice versa.