Physics 257Lecture 0: Basic Statistics & Introduction to MatlabProf. Matt DobbsPhysics Department, McGill U.Prof. M. Dobbs, Physics 257Lecture 0 Stats2OutlineOrientation session was yesterday, Sept 6. If you missed it, download the information from WebCT. We covered:zSyllabus, lab rules & expectationzBrief intro to the interplay between theory & experiment + the scientific methodTODAYAverage behavior of data: Mean, median, modeMeasures of spread: Variance, standard deviationCorrelations: covariance, corr coefficientSignificant FiguresMatlab IntroductionBasic StatisticsStatistics is the mathematical treatment and analysis of large quantities of data.It provides us with a means of characterizing a distribution of data with a few parameters such as the average and standard deviation.Prof. M. Dobbs, Physics 257Lecture 0 Stats4Why StatisticsA couple centuries ago: “If your experiment needs statistics, you ought to have done a better experiment”(B. Russell)zFirst statistics conference was held in 1853.Today: To be a statistician is great ! You never have to be “absolutely sure” of something ... Being “reasonably certain” is enough! (from Frank Lehner lecture)Our goal: learn to use statistics as a quantitative tool to report scientific results. Learn to understand what other people’s statistics mean – and when to trust them.
This preview has intentionally blurred sections.
Sign up to view the full version.