Error bars illustrate the margin of error for a survey estimate by showing how precise that estimate is. Here are some answers to common questions that might help you better understand charts with ...

Understanding the confidence interval will help you grasp what an election poll is -- or is not -- saying. As you might have guessed, the media consistently gets it wrong. Candidate Gobermouch is ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Sometimes it’s hard to have confidence in science. So many results from published scientific studies turn out to be wrong. Part of the problem is that science has trouble quantifying just how ...

An expected volume coefficient (EV) is defined and proposed to displace volume and selectivity as criteria for the evaluation of confidence sets, and a proposal for evaluation is given. This proposal ...

The number needed to treat, that is, the average number of patients a clinician needs to treat with a particular therapy to prevent one bad outcome,1 is a translation into clinical terms of the ...