Empirical data and statistical evidence can greatly enhance the persuasive power of an argument. Memorial Library provides a wide range of access points for stats, maps, demographics, and other forms of number crunching.
The agencies and departments of the U.S. government, as well as state and local governments, produce a wealth of statistical and demographic information. Here are some of the key portals to those resources.
Health information sources are readily available from government sites and non-governmental organizations. Such resources may include both empirical data and policy statements, as well as analysis. Here are a few key starting points.
Polls and surveys provide insight into attitudes, perspectives, and beliefs held by individual groups of people or by the population in general. Public opinion is tracked by many different groups with many different aims, and survey questions may sometimes be fashioned to elicit a desired result. The polling venues and resources reflected here are considered balanced and impartial in their collections methods. Also note that the archives of many news organizations maintain polling data and relevant stories.
In addition, the Gallup Poll: Public Opinion annual synopses are also available in print form through Memorial Library. The historical series covers polling data back to 1978.