An Example of Margin of Error and Confidence Levels The key to the validity of any survey is randomness.

As Americans await election results, many are looking to the polls for clues. From the margins of error to methodology, here’s what to know about presidential polls.

In the current election cycle, many media reports about polls are not including information about the margin of error.

Interpreting poll results can be like herding cats. Here’s how to understand margin of error and the nuance of results.

Conducting a poll isn’t an exact science. The process is susceptible to lots of common problems and baked-in biases — more than just the “margin of error.” ...

Understanding the margin of error is key to interpreting political polls' accuracy.