Mara Liasson's "The challenges behind accurate opinion polls" on October 06, 2014 applied statistics NPR politics polling techniques sampling sampling error +
Slate & Rojas-LeBouef's "Presenting and Communicating Your Statistical Findings: Model Writeups" on September 29, 2014 ANOVA APA formatting chi-square correlation effect sizes t-test the new statistics +
Kristoffer Magnusson's" Understanding correlations, an interactive visualization" on September 25, 2014 correlation interactive r^2 scatter plots shared variance +