Political Polls: Interpreting Sampling and Margin of Error

Understanding a political poll requires method: sampling, margin of error, questions, and bias matter more than the bold ...
The New York Times

Where Polls Can Mess Up (and What Pollsters Do About It)

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.” By ...
Kellogg School of Management

The Fundamental Concept

Consider a population of 70 individuals, for which you wish to estimate the mean annual income, μ. Assume that you have decided to use the following estimation procedure to make your estimate: simple ...
Nature

Sampling distributions and the bootstrap

We have previously discussed the importance of estimating uncertainty in our measurements and incorporating it into data analysis 1. To know the extent to which we can generalize our observations, we ...