Primary data sets are the original data collected by institutions and researchers. Reputable data sources usually report their collection methods. In many cases, you can filter and download data sets.
The Agency for Healthcare Research and Quality (AHRQ) is the lead Federal agency charged with improving the safety and quality of America's health care system. AHRQ develops the knowledge, tools, and data needed to improve the health care system and help Americans, health care professionals, and policymakers make informed health decisions.
Human health data, resources include tissue banks and repositories, datasets and databases, model organisms, genome and DNA sequences, and resource libraries.
The Statistical Consulting Center offers assistance with data analysis, using data software, and research design. The service is free to students and faculty with unfunded projects.
This Data Download site allows the user to access data from the Minnesota Department of Education. This includes data from state assessments such as MCA-II.