Serious polling requires careful data collection and careful adjustment. It doesn't mean much to say your poll is a "probability sample" when your nonresponse rate is 90 percent.

While representative sampling is one of the most effective methods used to reduce error, it is often not enough to do so sufficiently on its own.

We investigated sampling and non-sampling errors for size measurements (straight carapace length, straight carapace width, and mass) of hatchling Flatback Turtles, Natator depressus, from two study ...

Most brands require reps to pay for their sample lines, which can cost tens of thousands of dollars. Is it fair?

This paper presents an exact finite-sample statistical procedure for testing hypotheses about the weights of mean-variance efficient portfolios. The estimation and inference procedures on efficient ...

Cutting a single additional ‘deeper’ level at the time of frozen section identifies more tumor-bearing specimens and may reduce the number of sampling errors.

Our results have important implications for cancer biomarker discovery in general and development of a sampling error-resistant clinical biopsy test for prediction of prostate cancer aggressiveness.

A new report released Friday suggests widely documented water quality issues in Riviera Beach may have been caused by a sampling error and not by dirty water.