Statistics 101: Is My Data Normal?

Statistics 101: Is My Data Normal? Many statistical techniques assume that the underlying data is normally distributed. What simple techniques can we use to test this assumption? In this presentation we will briefly discuss the following tools to determine if our data is "normal" free of excess skew and/or kurtosis: Histograms Stem and Leaf Plots Box Plots (Box and Whisker Plots) P-P Plots Q-Q Plots I do not go into how these tools are calculated. This is merely an introduction to common preemptive visual techniques to determine the normality of a data set. Enjoy! For my complete video library organized by playlist, please go to my video page here: http://www.youtube.com/user/BCFoltz/videos?flow=list&view=1&live_view=500&sort=dd