Secondary qualitative data is usually found in the form of social artifacts, like newspapers, blogs, diaries, letters, and emails, among other things.
Such data is a rich source of information about individuals in society and can provide a great deal of context and detail to sociological analysis.
Sometimes researchers or research organizations share their data with other researchers in order to ensure that its usefulness is maximized. In many cases, this data is available to the general public, but in some cases, it is only available to approved users. Census, the General Social Survey, and the American Community Survey are some of the most commonly used secondary data sets within the social sciences.
Secondary data can be both quantitative and qualitative in form. In addition, many researchers make use of data collected and distributed by agencies including the Bureau of Justice Statistics, the Environmental Protection Agency, the Department of Education, and the U. Bureau of Labor Statistics, among many others at federal, state, and local levels.