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 ...

Similarly, you could use a confidence interval in risk management as well ... are based on a sample of a population and come within a margin of error, which expresses a similar concept as ...

The margin of error allows you to use smaller sample sizes when conducting customer surveys. The measurement directly relates to the size of your sample, with larger ...

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 ...

Confidence intervals are calculated using a mathematical formula that ... If you divide the confidence interval in half, you get the margin of error—in this case, 28%. The larger the margin ...

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 ...

Oct. 8, 2008— -- Surveys based on a random sample of respondents are subject to sampling error – a calculation of how closely the results reflect the attitudes ...