课程: Statistics Foundations 3: Using Data Sets

今天就学习课程吧！

今天就开通帐号，24,100 门业界名师课程任您挑！

Confidence intervals with unexpected outcomes

Confidence intervals with unexpected outcomes

课程: Statistics Foundations 3: Using Data Sets

开始一个月试用 购买团队方案

Confidence intervals with unexpected outcomes

“

- Suppose before an election, a polling organization develops a 95% confidence interval. This 95% confidence interval reports that Candidate A will receive between 51% and 54% of the vote. Then election day comes around, and Candidate A loses. Candidate A would probably be furious. Before the election, they were very confident of a win, and now they realize that they actually lost. How could this have happened? Well, this is where it helps to be a well-rounded statistician. Beyond having a knowledge of the numbers and formulas, you need to understand the real-life environment that surrounds the poll. In this case, it would be helpful if we understood how political polls are taken and also the nature of the actual election. So what might go wrong during the actual poll? Some people that are polled want to throw off the poll, so they just may lie. Or perhaps they're too embarrassed to tell a pollster about their true…

内容