The information in this list was taken from slides prepared by Professor Herman Bennett of the Harvard Kennedy School. This list will cover the following: →What data are » Observation, variable, population, sample →How to graphically represent data » Histograms and distributions →How to describe data features in a single number » Descriptive statistics: mean, variance, standard deviation, etc →How to describe the relationship between two variables » Covariance and correlation » Correlation and causality