CREDO assists with preliminary research by searching in hundreds of reliable encyclopedias, dictionaries, thesauruses, quotation databases, and subject-specific reference monograph titles, as well as over 200,000 images and audio files and nearly 100 videos.
Wikipedia provides crowdsourced information on many topics ... which can be a good source of common knowledge ... but one must be very careful to critiique the accuracy and reliability of such information. The other resources listed on this page have certified authority and accuracy.
Opposing Viewpoints creates articles and topic overviews, and gathers primary-source documents, statistics, images, and podcasts on current social issues. It also has national and state curriculum standards. This tool provides a good introduction to topics, but you should supplement it with related in-depth materials from our other databases.
The Statistics page provides many resources for discovering data on the Internet, some from government agencies, some from international agencies, and data from other sources. In many cases these data sets must be imported (in some cases after format manipulation) into data tools such as SPSS and SAS. For additional information about Data support, see the Purdue University Data site.
The library also provides access to the Simply Map tool that allows researchers to mine U.S. census data and sets of business data in order to generate maps or build data sets that can be exported into other tools such as Excel, SPSS, and SAS for further manipulation. See our short videos showing mapping and ranking by a variable and finding various data sets.