On April 22, leaders and representatives from more than 150 countries will gather at the United Nations to sign the global climate change agreement reached in Paris in December. Pew Research Center’s spring 2015 survey found that people around the world are concerned about climate change and want their governments to take action.
“…Among the challenging decisions that instructors face in creating syllabi is the question of how much reading, writing, and other work to assign each week.
“The federal definition of course credit hours assumes a minimum of “two hours of out-of-class student work per week for a semester hour.” According to this metric, a student should assume at least six hours of out-of-class work per week for each 3-credit course.”
Note: “at least”
Can polls be trusted? This question is on the minds of seemingly everyone who follows the 2016 campaign, though it is hardly unique to this election cycle. The answer is complicated, thanks to myriad challenges facing polling and the fact that pollsters have reacted to these challenges in disparate ways.
Some polls are conducted literally overnight with convenience samples and undergo little or no adjustment. Others are painstakingly fielded for days or even weeks with robust designs and may be adjusted using cutting-edge techniques. These dramatic differences, which have been shown to affect accuracy, are often opaque to news consumers. What follows is a big-picture review of the state of polling, organized around a number of key flashpoints with links to references and research for those who want to better understand the field.