Vahram Muradyan for NPR NPR Ed 2 Years After 'Opt Out,' Are Students Taking Fewer Tests? October 26, 2017 • What has changed — and what hasn't — since President Obama called for a new approach amid a national debate over how much time students spend preparing for, and taking, standardized tests.
UIG via Getty Images Opinion 13.7: Cosmos And Culture Do You Really Have That Disease? February 28, 2017 • In statistics, a frequentist interpretation looks only at the simple probability. But Bayes' theorem works with conditional information rather than just looking at a positive result, says Adam Frank.
Parallels QUIZ: Do You Have What It Takes To Work For Samsung? April 19, 2016 • The "Samsung SAT" is the South Korean company's aptitude test that features a gantlet of 160 questions in 140 minutes. Test yourself with a few practice questions.
