When people can learn what others think, the wisdom of crowds may veer towards ignorance.
In a new study of crowd wisdom — the statistical phenomenon by which individual biases cancel each other out, distilling hundreds or thousands of individual guesses into uncannily accurate average answers — researchers told test participants about their peers’ guesses. As a result, their group insight went awry...[more] From Wired Science blog
SAMHDA
The Substance Abuse and Mental Health Data Archive (SAMHDA) "provides free, ready access to comprehensive research data in a variety of formats and promotes the sharing of these data among researchers, academics, policymakers, service providers, and others. The goal is to increase the use of the data to most accurately understand and assess substance abuse and mental health problems and the impact of related treatment systems. " All data may be downloaded from the Web site and includes the United States general and special populations, annual series, and designs that produce nationally representative estimates. SAMHDA is an initiative of the Office of Applied Studies (OAS), Substance Abuse and Mental Health Services Administration (SAMHSA) of the U.S. Department of Health and Human Services. From Intute.ac.uk
http://icpsr.umich.edu/SAMHDA/
The Center for the Teaching of Statistics at UCLA is concerned with both providing a resource for colleagues at their university but also for the statistics community in general. Along with forming collaborative partnerships with area institutions, they have also created this site for statistics educators across the country. Visitors interested in these materials should start by clicking on the "Lab Manuals and Datasets" section. Here, they will find information on how to teach Advanced Placement level statistics and also learn about their interactive aids designed to help the teaching format in college-level probability and statistics courses. Additionally, visitors should browse on over to the "Papers" section, which includes helpful documents written by staff members and associates at the Center. [KMG] Scout Report