This study focuses on the startling difference between prescription drugs that are name brand and those that are generic brand. The experimental design seems to be put together nicely, although the research group has received criticism from The Pharmaceutical Research and Manufacturers of America, claiming that the high average costs of name brand drugs is due to a few outliers. This shows a non-sampling error within the study. If there truly are outliers, the researchers should either note them, or find out if they are mistakes and remove them.
Research Link: http://www.nytimes.com/2012/11/29/business/cost-of-brand-name-prescription-medicines-soaring.html?ref=research&_r=0